2,4-Pyrimidinediamine compounds and their uses

ABSTRACT

The present invention provides 2,4-pyrimidinediamine compounds that inhibit the IgE and/or IgG receptor signaling cascades that lead to the release of chemical mediators, intermediates and methods of synthesizing the compounds and methods of using the compounds in a variety of contexts, including in the treatment and prevention of diseases characterized by, caused by or associated with the release of chemical mediators via degranulation and other processes effected by activation of the IgE and/or IgG receptor signaling cascades.

1. CROSS REFERENCE TO RELATED APPLICATIONS

This application is a continuation of application Ser. No. 10/355,543 filed Jan. 31, 2003, now pending, which claims benefit under 35 U.S.C. §119(e) to application Ser. No. 60/353,333 filed Feb. 1, 2002; application Ser. No. 60/353,267 filed Feb. 1, 2002; application Ser. No. 60/399,673 filed Jul. 29, 2002; and application Ser. No. 60/434,277 filed Dec. 17, 2002. The contents of application Ser. No. 10/355,543 are incorporated herein by reference.

2. FIELD OF THE INVENTION

The present invention relates generally to 2,4-pyrimidinediamine compounds, pharmaceutical compositions comprising the compounds, intermediates and synthetic methods of making the compounds and methods of using the compounds and compositions in a variety of contexts.

3. BACKGROUND OF THE INVENTION

Crosslinking of Fc receptors, such as the high affinity receptor for IgE (FcεRI) and/or the high affinity receptor for IgG (FcγRI) activates a signaling cascade in mast, basophil and other immune cells that results in the release of chemical mediators responsible for numerous adverse events. For example, such crosslinking leads to the release of preformed mediators of Type I (immediate) anaphylactic hypersensitivity reactions, such as histamine, from storage sites in granules via degranulation. It also leads to the synthesis and release of other mediators, including leukotrienes, prostaglandins and platelet-activating factors (PAFs), that play important roles in inflammatory reactions. Additional mediators that are synthesized and released upon crosslinking Fc receptors include cytokines and nitric oxide.

The signaling cascade(s) activated by crosslinking Fc receptors such as Fc□RI and/or FcγRI comprises an array of cellular proteins. Among the most important intracellular signal propagators are the tyrosine kinases. And, an important tyrosine kinase involved in the signal transduction pathways associated with crosslinking the FcεRI and/or FcγRI receptors, as well as other signal transduction cascades, is Syk kinase (see Valent et al., 2002, Intl. J. Hematol. 75(4):257-362 for review).

As the mediators released as a result of FcεRI and FcγRI receptor cross-linking are responsible for, or play important roles in, the manifestation of numerous adverse events, the availability of compounds capable of inhibiting the signaling cascade(s) responsible for their release would be highly desireable. Moreover, owing to the critical role that Syk kinase plays these and other receptor signaling cascade(s), the availability of compounds capable of inhibiting Syk kinase would also be highly desirable.

4. SUMMARY OF THE INVENTION

In one aspect, the present invention provides novel 2,4-pyrimidinediamine compounds that, as will be discussed in more detail below, have myriad biological activities. The compounds generally comprise a 2,4-pyrimidinediamine “core” having the following structure and numbering convention:

The compounds of the invention are substituted at the C2 nitrogen (N2) to form a secondary amine and are optionally further substituted at one or more of the following positions: the C4 nitrogen (N4), the C5 position and/or the C6 position. When substituted at N4, the substituent forms a secondary amine. The substituent at N2, as well as the optional substituents at the other positions, may range broadly in character and physico-chemical properties. For example, the substituent(s) may be a branched, straight-chained or cyclic alkyl, a branched, straight-chained or cyclic heteroalkyl, a mono- or polycyclic aryl a mono- or polycyclic heteroaryl or combinations of these groups. These substituent groups may be further substituted, as will be described in more detail below.

The N2 and/or N4 substituents may be attached directly to their respective nitrogen atoms, or they may be spaced away from their respective nitrogen atoms via linkers, which may be the same or different. The nature of the linkers can vary widely, and can include virtually any combination of atoms or groups useful for spacing one molecular moiety from another. For example, the linker may be an acyclic hydrocarbon bridge (e.g, a saturated or unsaturated alkyleno such as methano, ethano, etheno, propano, prop[1]eno, butano, but[1]eno, but[2]eno, buta[1,3]dieno, and the like), a monocyclic or polycyclic hydrocarbon bridge (e.g., [1,2]benzeno, [2,3]naphthaleno, and the like), a simple acyclic heteroatomic or heteroalkyldiyl bridge (e.g., —O—, —S—, —S—O—, —NH—, —PH—, —C(O)—, —C(O)NH—, —S(O)—, —S(O)₂—, —S(O)NH—, —S(O)₂NH—, —O—CH₂—, —CH₂—O—CH₂—, —O—CH═CH—CH₂—, and the like), a monocyclic or polycyclic heteroaryl bridge (e.g., [3,4]furano, pyridino, thiopheno, piperidino, piperazino, pyrazidino, pyrrolidino, and the like) or combinations of such bridges.

The substituents at the N2, N4, C5 and/or C6 positions, as well as the optional linkers, may be further substituted with one or more of the same or different substituent groups. The nature of these substituent groups may vary broadly. Non-limiting examples of suitable substituent groups include branched, straight-chain or cyclic alkyls, mono- or polycyclic aryls, branched, straight-chain or cyclic heteroalkyls, mono- or polycyclic heteroaryls, halos, branched, straight-chain or cyclic haloalkyls, hydroxyls, oxos, thioxos, branched, straight-chain or cyclic alkoxys, branched, straight-chain or cyclic haloalkoxys, trifluoromethoxys, mono- or polycyclic aryloxys, mono- or polycyclic heteroaryloxys, ethers, alcohols, sulfides, thioethers, sulfanyls (thiols), imines, azos, azides, amines (primary, secondary and tertiary), nitriles (any isomer), cyanates (any isomer), thiocyanates (any isomer), nitrosos, nitros, diazos, sulfoxides, sulfonyls, sulfonic acids, sulfamides, sulfonamides, sulfamic esters, aldehydes, ketones, carboxylic acids, esters, amides, amidines, formadines, amino acids, acetylenes, carbamates, lactones, lactams, glucosides, gluconurides, sulfones, ketals, acetals, thioketals, oximes, oxamic acids, oxamic esters, etc., and combinations of these groups. Substituent groups bearing reactive functionalities may be protected or unprotected, as is well-known in the art.

In one illustrative embodiment, the 2,4-pyrimidinediamine compounds of the invention are compounds according to structural formula (I):

including salts, hydrates, solvates and N-oxides thereof, wherein:

L¹ and L² are each, independently of one another, selected from the group consisting of a direct bond and a linker;

R² is selected from the group consisting of (C1-C6) alkyl optionally substituted with one or more of the same or different R⁸ groups, (C3-C8) cycloalkyl optionally substituted with one or more of the same or different R⁸ groups, cyclohexyl optionally substituted with one or more of the same or different R⁸ groups, 3-8 membered cycloheteroalkyl optionally substituted with one or more of the same or different R⁸ groups, (C5-C15) aryl optionally substituted with one or more of the same or different R⁸ groups, phenyl optionally substituted with one or more of the same or different R⁸ groups and 5-15 membered heteroaryl optionally substituted with one or more of the same or different R⁸ groups;

R⁴ is selected from the group consisting of hydrogen, (C1-C6) alkyl optionally substituted with one or more of the same or different R⁸ groups, (C3-C8) cycloalkyl optionally substituted with one or more of the same or different R⁸ groups, cyclohexyl optionally substituted with one or more of the same or different R⁸ groups, 3-8 membered cycloheteroalkyl optionally substituted with one or more of the same or different R⁸ groups, (C5-C15) aryl optionally substituted with one or more of the same or different R⁸ groups, phenyl optionally substituted with one or more of the same or different R⁸ groups and 5-15 membered heteroaryl optionally substituted with one or more of the same or different R⁸ groups;

R⁵ is selected from the group consisting of R⁶, (C1-C6) alkyl optionally substituted with one or more of the same or different R⁸ groups, (C1-C4) alkanyl optionally substituted with one or more of the same or different R⁸ groups, (C2-C4) alkenyl optionally substituted with one or more of the same or different R⁸ groups and (C2-C4) alkynyl optionally substituted with one or more of the same or different R⁸ groups;

each R⁶ is independently selected from the group consisting of hydrogen, an electronegative group, —OR^(d), —SR^(d), (C1-C3) haloalkyloxy, (C1-C3) perhaloalkyloxy, —NR^(c)R^(c), halogen, (C1-C3) haloalkyl, (C1-C3) perhaloalkyl, —CF₃, —CH₂CF₃, —CF₂CF₃, —CN, —NC, —OCN, —SCN, —NO, —NO₂, —N₃, —S(O)R^(d), —S(O)₂R^(d), —S(O)₂OR^(d), —S(O)NR^(c)R^(c); —S(O)₂NR^(c)R^(c), —OS(O)R^(d), —OS(O)₂R^(d), —OS(O)₂OR^(d), —OS(O)NR^(c)R^(c), —OS(O)₂NR^(c)R^(c), —C(O)R^(d), —C(O)OR^(d), —C(O)NR^(c)R^(c), —C(NH)NR^(c)R^(c), —OC(O)R^(d), —SC(O)R^(d), —OC(O)OR^(d), —SC(O)OR^(d), —OC(O)NR^(c)R^(c), —SC(O)NR^(c)R^(c), —OC(NH)NR^(c)R^(c), —SC(NH)NR^(c)R^(c), —[NHC(O)]_(n)R^(d), —[NHC(O)]_(n)OR^(d), —[NHC(O)]_(n)NR^(c)R^(c) and —[NHC(NH)]_(n)NR^(c)R^(c), (C5-C10) aryl optionally substituted with one or more of the same or different R⁸ groups, phenyl optionally substituted with one or more of the same or different R⁸ groups, (C6-C16) arylalkyl optionally substituted with one or more of the same or different R⁸ groups, 5-10 membered heteroaryl optionally substituted with one or more of the same or different R⁸ groups and 6-16 membered heteroarylalkyl optionally substituted with one or more of the same or different R⁸ groups;

R⁸ is selected from the group consisting of R^(a), R^(b), R^(a) substituted with one or more of the same or different R^(a) or R^(b), —OR^(a) substituted with one or more of the same or different R^(a) or R^(b), —B(OR^(a))₂, —B(NR^(c)R^(c))₂, —(CH₂)_(m)—R^(b), —(CHR^(a))_(m)—R^(b), —O—(CH₂)_(m)—R^(b), —S—(CH₂)_(m)—R^(b), —O—CHR^(a)R^(b), —O—CR^(a)(R^(b))₂, —O—(CHR^(a))_(m)—R^(b), —O—(CH₂)_(m)—CH[(CH₂)_(m)R^(b)]R^(b), —S—(CHR^(a))_(m)—R^(b), —C(O)NH—(CH₂)_(m)—R^(b), —C(O)NH—(CHR^(a))_(m)—R^(b), —O—(CH₂)_(m)—C(O)NH—(CH₂)_(m)—R^(b), —S—(CH₂)_(m)—C(O)NH—(CH₂)_(m)—R^(b), —O—(CHR^(a))_(m)—C(O)NH—(CHR^(a))_(m)—R^(b), —S—(CHR^(a))_(m)—C(O)NH—(CHR^(a))_(m)—R^(b), —NH—(CH₂)_(m)—R^(b), —NH—(CHR^(a))_(m)—R^(b), —NH[(CH₂)_(m)R^(b)], —N[(CH₂)_(m)R^(b)]₂, —NH—C(O)—NH—(CH₂)_(m)—R^(b), —NH—C(O)—(CH₂)_(m)—CHR^(b)R^(b) and —NH—(CH₂)_(m)—C(O)—NH—(CH₂)_(m)—R^(b);

each R^(a) is independently selected from the group consisting of hydrogen, (C1-C6) alkyl, (C3-C8) cycloalkyl, cyclohexyl, (C4-C11) cycloalkylalkyl, (C5-C10) aryl, phenyl, (C6-C16) arylalkyl, benzyl, 2-6 membered heteroalkyl, 3-8 membered cycloheteroalkyl, morpholinyl, piperazinyl, homopiperazinyl, piperidinyl, 4-11 membered cycloheteroalkylalkyl, 5-10 membered heteroaryl and 6-16 membered heteroarylalkyl;

each R^(b) is a suitable group independently selected from the group consisting of ═O, —OR^(d), (C1-C3) haloalkyloxy, —OCF₃, ═S, —SR^(d), ═NR^(d), ═NOR^(d), —NR^(c)R^(c), halogen, —CF₃, —CN, —NC, —OCN, —SCN, —NO, —NO₂, ═N₂, —N₃, —S(O)R^(d), —S(O)₂R^(d), —S(O)₂OR^(d), —S(O)NR^(c)R^(c), —S(O)₂NR^(c)R^(c), —OS(O)R^(d), —OS(O)₂R^(d), —OS(O)₂OR^(d), —OS(O)₂NR^(c)R^(c), —C(O)R^(d), —C(O)OR^(d), —C(O)NR^(c)R^(c), —C(NH)NR^(c)R^(c), —C(NR^(a))NR^(c)R^(c), —C(NOH)R^(a), —C(NOH)NR^(c)R^(c), —OC(O)R^(d), —OC(O)OR^(d), —OC(O)NR^(c)R^(c), —OC(NH)NR^(c)R^(c), —OC(NR^(a))NR^(c)R^(c), —[NHC(O)]_(n)R^(d), —[NR^(a)C(O)]_(n)R^(d), —[NHC(O)]_(n)OR^(d), —[NR^(a)C(O)]_(n)OR^(d), —[NHC(O)]_(n)NR^(c)R^(c), —[NR^(a)C(O)]_(n)NR^(c)R^(c), —[NHC(NH)]_(n)NR^(c)R^(c) and —[NR^(a)C(NR^(a))]_(n)NR^(c)R^(c);

each R^(c) is independently a protecting group or R^(a), or, alternatively, each R^(c) is taken together with the nitrogen atom to which it is bonded to form a 5 to 8-membered cycloheteroalkyl or heteroaryl which may optionally include one or more of the same or different additional heteroatoms and which may optionally be substituted with one or more of the same or different R^(a) or suitable R^(b) groups;

each R^(d) is independently a protecting group or R^(a);

each m is independently an integer from 1 to 3; and

each n is independently an integer from 0 to 3.

In another aspect, the present invention provides prodrugs of the 2,4-pyrimidinediamine compounds. Such prodrugs may be active in their prodrug form, or may be inactive until converted under physiological or other conditions of use to an active drug form. In the prodrugs of the invention, one or more functional groups of the 2,4-pyrimidinediamine compounds are included in promoieties that cleave from the molecule under the conditions of use, typically by way of hydrolysis, enzymatic cleavage or some other cleavage mechanism, to yield the functional groups. For example, primary or secondary amino groups may be included in an amide promoiety that cleaves under conditions of use to generate the primary or secondary amino group. Thus, the prodrugs of the invention include special types of protecting groups, termed “progroups,” masking one or more functional groups of the 2,4-pyrimidinediamine compounds that cleave under the conditions of use to yield an active 2,4-pyrimidinediamine drug compound. Functional groups within the 2,4-pyrimidinediamine compounds that may be masked with progroups for inclusion in a promoiety include, but are not limited to, amines (primary and secondary), hydroxyls, sulfanyls (thiols), carboxyls, carbonyls, phenols, catechols, diols, alkynes, phosphates, etc. Myriad progroups suitable for masking such functional groups to yield promoieties that are cleavable under the desired conditions of use are known in the art. All of these progroups, alone or in combinations, may be included in the prodrugs of the invention. Specific examples of promoieties that yield primary or secondary amine groups that can be included in the prodrugs of the invention include, but are not limited to amides, carbamates, imines, ureas, phosphenyls, phosphoryls and sulfenyls. Specific examples of promoieties that yield sulfanyl groups that can be included in the prodrugs of the invention include, but are not limited to, thioethers, for example S-methyl derivatives (monothio, dithio, oxythio, aminothio acetals), silyl thioethers, thioesters, thiocarbonates, thiocarbamates, asymmetrical disulfides, etc. Specific examples of promoieties that cleave to yield hydroxyl groups that can be included in the prodrugs of the invention include, but are not limited to, sulfonates, esters and carbonates. Specific examples of promoieties that yield carboxyl groups that can be included in the prodrugs of the invention included, but are not limited to, esters (including silyl esters, oxamic acid esters and thioesters), amides and hydrazides.

In one illustrative embodiment, the prodrugs of the invention are compounds according to structural formula (I) in which the protecting group of R^(c) and R^(d) is a progroup.

Replacing the hydrogens attached to N2 and N4 in the 2,4-pyrimidinediamines of structural formula (I) with substituents adversely affects the activity of the compounds. However, as will be appreciated by skilled artisans, these nitrogens may be included in promoieties that, under conditions of use, cleave to yield 2,4-pyrimidinediamines according to structural formula (I). Thus, in another illustrative embodiment, the prodrugs of the invention are compounds according to structural formula (II):

including salts, hydrates, solvates and N-oxides thereof, wherein:

R², R⁴, R⁵, R⁶, L¹ and L² are as previously defined for structural formula (I); and

R^(2b) and R^(4b) are each, independently of one another, a progroup.

In another aspect, the present invention provides compositions comprising one or more compounds and/or prodrugs of the invention and an appropriate carrier, excipient or diluent. The exact nature of the carrier, excipient or diluent will depend upon the desired use for the composition, and may range from being suitable or acceptable for veterinary uses to being suitable or acceptable for human use.

In still another aspect, the present invention provides intermediates useful for synthesizing the 2,4-pyrimidinediamine compounds and prodrugs of the invention. In one embodiment, the intermediates are 4-pyrimidineamines according to structural formula (III):

including salts, hydrates, solvates and N-oxides thereof, wherein R⁴, R⁵, R⁶ and L² are as previously defined for structural formula (I); LG is a leaving group such as, for example, —S(O)₂Me, —SMe or halo (e.g., F, Cl, Br, I); and R^(4c) is hydrogen or a progroup.

In another embodiment, the intermediates are 2-pyrimidineamines according to structural formula (IV):

including salts, hydrates, solvates and N-oxides thereof, wherein R², R⁵, R⁶ and L¹ are as previously defined for structural formula (I); LG is a leaving group, such as, for example, —S(O)₂Me, —SMe or halo (e.g., F, Cl, Br, I) and R^(2c) is hydrogen or a progroup.

In yet another embodiment, the intermediates are 4-amino- or 4-hydroxy-2-pyrimidineamines according to structural formula (V):

including salts, hydrates, solvates and N-oxides thereof, wherein R², R⁵, R⁶ and L¹ are as previously defined for structural formula (I), R⁷ is an amino or hydroxyl group and R^(2c) is hydrogen or a progroup.

In another embodiment, the intermediates are N4-substituted cytosines according to structural formula (VI):

including salts, hydrates, solvates and N-oxides thereof, wherein R⁴, R⁵, R⁶ and L² are as previously defined for structural formula (I) and R^(4c) is hydrogen or a progroup.

In yet another aspect, the present invention provides methods of synthesizing the 2,4-pyrimidinediamine compounds and prodrugs of the invention. In one embodiment, the method involves reacting a 4-pyrimidineamine according to structural formula (III) with an amine of the formula HR^(2c)N-L¹-R², where L¹, R² and R^(2c) are as previously defined for structural formula (IV) to yield a 2,4-pyrimidinediamine according to structural formula (I) or a prodrug according to structural formula (II).

In another embodiment, the method involves reacting a 2-pyrimidineamine according to structural formula (IV) with an amine of the formula R⁴-L²-NHR^(4c) where L⁴, R⁴ and R^(4c) are as previously defined for structural formula (III) to yield a 2,4-pyrimidinediamine according to structural formula (I) or a prodrug according to structural formula (II).

In yet another embodiment, the method involves reacting a 4-amino-2-pyrimidineamine according to structural formula (V) (in which R⁷ is an amino group) with an amine of the formula R⁴-L²-NHR^(4c), where L², R⁴ and R^(4c) are as defined for structural formula (III), to yield a 2,4-pyrimidinediamine according to structural formula (I) or a prodrug according to structural formula (II). Alternatively, the 4-amino-2-pyrimidineamine may be reacted with a compound of the formula R⁴-L²-LG, where R⁴ and L² are as previously defined for structural formula (I) and LG is a leaving group.

In still another embodiment, the method involves halogenating a 4-hydroxy-2-pyrimidineamine according to structural formula (V) (R⁷ is a hydroxyl group) to yield a 2-pyrimidineamine according to structural formula (IV) and reacting this pyrimidineamine with an appropriate amine, as described above.

In yet another embodiment, the method involves halogenating an N4-substituted cytosine according to structural formula (VI) to yield a 4-pyrimidineamine according to structural formula (III) and reacting this pyrimidineamine with an appropriate amine, as described above.

The 2,4-pyrimidinediamine compounds of the invention are potent inhibitors of degranulation of immune cells, such as mast, basophil, neutrophil and/or eosinophil cells. Thus, in still another aspect, the present invention provides methods of regulating, and in particular inhibiting, degranulation of such cells. The method generally involves contacting a cell that degranulates with an amount of a 2,4-pyrimidinediamine compound or prodrug of the invention, or an acceptable salt, hydrate, solvate, N-oxide and/or composition thereof, effective to regulate or inhibit degranulation of the cell. The method may be practiced in in vitro contexts or in in vivo contexts as a therapeutic approach towards the treatment or prevention of diseases characterized by, caused by or associated with cellular degranulation.

While not intending to be bound by any theory of operation, biochemical data confirm that the 2,4-pyrimidinediamine compounds exert their degranulation inhibitory effect, at least in part, by blocking or inhibiting the signal transduction cascade(s) initiated by crosslinking of the high affinity Fc receptors for IgE (“FcεRI”) and/or IgG (“FcγRI”). Indeed, the 2,4-pyrimidinediamine compounds are potent inhibitors of both FcεRI-mediated and FcγRI-mediated degranulation. As a consequence, the 2,4-pyrimidine compounds may be used to inhibit these Fc receptor signalling cascades in any cell type expressing such FcεRI and/or FcγRI receptors including but not limited to macrophages, mast, basophil, neutrophil and/or eosinophil cells.

The methods also permit the regulation of, and in particular the inhibition of, downstream processes that result as a consequence of activating such Fc receptor signaling cascade(s). Such downstream processes include, but are not limited to, FcεRI-mediated and/or FcγRI-mediated degranulation, cytokine production and/or the production and/or release of lipid mediators such as leukotrienes and prostaglandins. The method generally involves contacting a cell expressing an Fc receptor, such as one of the cell types discussed above, with an amount of a 2,4-pyrimidinediamine compound or prodrug of the invention, or an acceptable salt, hydrate, solvent, N-oxide and/or composition thereof, effective to regulate or inhibit the Fc receptor signaling cascade and/or a downstream process effected by the activation of this signaling cascade. The method may be practiced in in vitro contexts or in in vivo contexts as a therapeutic approach towards the treatment or prevention of diseases characterized by, caused by or associated with the Fc receptor signaling cascade, such as diseases effected by the release of granule specific chemical mediators upon degranulation, the release and/or synthesis of cytokines and/or the release and/or synthesis of lipid mediators such as leukotrienes and prostaglandins.

In yet another aspect, the present invention provides methods of treating and/or preventing diseases characterized by, caused by or associated with the release of chemical mediators as a consequence of activating Fc receptor signaling cascades, such as FcεRI and/or FcγRI-signaling cascades. The methods may be practiced in animals in veterinary contexts or in humans. The methods generally involve administering to an animal subject or human an amount of a 2,4-pyrimidinediamine compound or prodrug of the invention, or an acceptable salt, hydrate, solvate, N-oxide and/or composition thereof, effective to treat or prevent the disease. As discussed previously, activation of the FcεRI or FcγRI receptor signaling cascade in certain immune cells leads to the release and/or synthesis of a variety of chemical substances that are pharmacological mediators of a wide variety of diseases. Any of these diseases may be treated or prevented according to the methods of the invention.

For example, in mast cells and basophil cells, activation of the FcεRI or FcγRI signaling cascade leads to the immediate (i.e., within 1-3 min. of receptor activation) release of preformed mediators of atopic and/or Type I hypersensitivity reactions (e.g., histamine, proteases such as tryptase, etc.) via the degranulation process. Such atopic or Type I hypersensitivity reactions include, but are not limited to, anaphylactic reactions to environmental and other allergens (e.g., pollens, insect and/or animal venoms, foods, drugs, contrast dyes, etc.), anaphylactoid reactions, hay fever, allergic conjunctivitis, allergic rhinitis, allergic asthma, atopic dermatitis, eczema, urticaria, mucosal disorders, tissue disorders and certain gastrointestinal disorders.

The immediate release of the preformed mediators via degranulation is followed by the release and/or synthesis of a variety of other chemical mediators, including, among other things, platelet activating factor (PAF), prostaglandins and leukotrienes (e.g., LTC4) and the de novo synthesis and release of cytokines such as TNFα, IL4, IL-5, IL-6, IL-13, etc. The first of these two processes occurs approximately 3-30 min. following receptor activation; the latter approximately 30 min.-7 hrs. following receptor activation. These “late stage” mediators are thought to be in part responsible for the chronic symptoms of the above-listed atopic and Type I hypersensitivity reactions, and in addition are chemical mediators of inflammation and inflammatory diseases (e.g., osteoarthritis, inflammatory bowel disease, ulcerative colitis, Crohn's disease, idiopathic inflammatory bowel disease, irritable bowel syndrome, spastic colon, etc.), low grade scarring (e.g., scleroderma, increased fibrosis, keloids, post-surgical scars, pulmonary fibrosis, vascular spasms, migraine, reperfusion injury and post myocardial infarction), and sicca complex or syndrome. All of these diseases may be treated or prevented according to the methods of the invention.

Additional diseases which can be treated or prevented according to the methods of the invention include diseases associated with basophil cell and/or mast cell pathology. Examples of such diseases include, but are not limited to, diseases of the skin such as scleroderma, cardiac diseases such as post myocardial infarction, pulmonary diseases such as pulmonary muscle changes or remodeling and chronic obstructive pulmonary disease (COPD) and diseases of the gut such as inflammatory bowel syndrome (spastic colon).

The 2,4-pyrimidinediamine compounds of the invention are also potent inhibitors of the tyrosine kinase Syk kinase. Thus, in still another aspect, the present invention provides methods of regulating, and in particular inhibiting, Syk kinase activity. The method generally involves contacting a Syk kinase or a cell comprising a Syk kinase with an amount of a 2,4-pyrimidinediamine compound or prodrug of the invention, or an acceptable salt, hydrate, solvate, N-oxide and/or composition thereof, effective to regulate or inhibit Syk kinase activity. In one embodiment, the Syk kinase is an isolated or recombinant Syk kinase. In another embodiment, the Syk kinase is an endogenous or recombinant Syk kinase expressed by a cell, for example a mast cell or a basophil cell. The method may be practiced in in vitro contexts or in in vivo contexts as a therapeutic approach towards the treatment or prevention of diseases characterized by, caused by or associated with Syk kinase activity.

While not intending to be bound by any particular theory of operation, it is believed that the 2,4-pyrimdinediamine compounds of the invention inhibit cellular degranulation and/or the release of other chemical mediators primarily by inhibiting Syk kinase that gets activated through the gamma chain homodimer of FcεRI (see, e.g., FIG. 2). This gamma chain homodimer is shared by other Fc receptors, including FcγRI, FcγRIII and FcαRI. For all of these receptors, intracellular signal transduction is mediated by the common gamma chain homodimer. Binding and aggregation of those receptors results in the recruitment and activation of tyrosine kinases such as Syk kinase. As a consequence of these common signaling activities, the 2,4-pyrimidinediamine compounds described herein may be used to regulate, and in particular inhibit, the signaling cascades of Fc receptors having this gamma chain homodimer, such as FcεRI, FcγRI, FcγRIII and FcαRI, as well as the cellular responses elicited through these receptors.

Syk kinase is known to play a critical role in other signaling cascades. For example, Syk kinase is an effector of B-cell receptor (BCR) signaling (Turner et al., 2000, Immunology Today 21:148-154) and is an essential component of integrin beta(1), beta(2) and beta(3) signaling in neutrophils (Mocsai et al., 2002, Immunity 16:547-558). As the 2,4-pyrimidinediamine compounds described herein are potent inhibitors of Syk kinase, they can be used to regulate, and in particular inhibit, any signaling cascade where Syk plays a role, such as, fore example, the Fc receptor, BCR and integrin signaling cascades, as well as the cellular responses elicited through these signaling cascades. The particular cellular response regulated or inhibited will depend, in part, on the specific cell type and receptor signaling cascade, as is well known in the art. Non-limiting examples of cellular responses that may be regulated or inhibited with the 2,4-pyrimidinediamine compounds include a respiratory burst, cellular adhesion, cellular degranulation, cell spreading, cell migration, phagocytosis (e.g., in macrophages), calcium ion flux (e.g., in mast, basophil, neutrophil, eosinophil and B-cells), platelet aggregation, and cell maturation (e.g., in B-cells).

Thus, in another aspect, the present invention provides methods of regulating, and in particular inhibiting, signal transduction cascades in which Syk plays a role. The method generally involves contacting a Syk-dependent receptor or a cell expressing a Syk-dependent receptor with an amount of a 2,4-pyrimidinediamine compound or prodrug of the invention, or an acceptable salt, hydrate, solvate, N-oxide and/or composition thereof, effective to regulate or inhibit the signal transduction cascade. The methods may also be used to regulate, and in particular inhibit, downstream processes or cellular responses elicited by activation of the particular Syk-dependent signal transduction cascade. The methods may be practiced to regulate any signal trasduction cascade where Syk is not known or later discovered to play a role. The methods may be practiced in in vitro contexts or in in vivo contexts as a therapeutic approach towards the treatment or prevention of diseases characterized by, caused by or associated with activation of the Syk-dependent signal transduction cascade. Non-limited examples of such diseases include those previously discussed.

5. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 provides a cartoon illustrating allergen-induced production of IgE and consequent release of preformed and other chemical mediators from mast cells;

FIG. 2 provides a cartoon illustrating the FcεR1 signal transduction cascade leading to degranulation of mast and/or basophil cells;

FIG. 3 provides a cartoon illustrating the putative points of action of compounds that selectively inhibit upstream FcεRI-mediated degranulation and compounds that inhibit both FcεRI-mediated and ionomycin-induced degranulation;

FIG. 4 provides graphs illustrating the effects of certain 2,4-pyrimidinediamine compounds, DMSO (control) and ionomycin on Ca²⁺ flux in CHMC cells;

FIG. 5 provides graphs illustrating the immediacy of the inhibitory activity of compounds R921218 and R926495;

FIG. 6 provides a graph illustrating the effect of washout on the inhibitory activity of compounds R921218 and R921302;

FIG. 7 provides data showing that varying concentrations of compounds R921218 (A) and R921219 (B) inhibit phosporylation of various proteins downstream of Syk kinase in the IgE receptor signal transduction cascade in activated BMMC cells;

FIG. 8 provides data showing dose responsive inhibition of Syk kinase phosphorylation of an endogenous substrate (LAT) and a peptide substrate in the presence of increasing concentrations of compounds R921218 (X), R921219 (Y) and R921304 (Z);

FIG. 9 provides data showing that the inhibition of Syk kinase by compound R921219 is ATP competitive;

FIG. 10 provides data showing that varying concentrations of compounds R921219 (A) and R218218 (B) inhibit phosphorylation of proteins downstream of Syk kinase, but not LYN kinase, in the FcεRI signal transduction cascade in activated CHMC cells; also shown is inhibition of phosphorylation of proteins downstream of LYN kinase but not Syk kinase, in the presence of a known LYN kinase inhibitor (PP2); and

FIGS. 11A-D provide data showing inhibition of phosphorylation of proteins downstream of Syk kinase in the FcεRI signal transduction cascade in BMMC cells.

6. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 6.1 DEFINITIONS

As used herein, the following terms are intended to have the following meanings:

“Alkyl” by itself or as part of another substituent refers to a saturated or unsaturated branched, straight-chain or cyclic monovalent hydrocarbon radical having the stated number of carbon atoms (i.e., C1-C6 means one to six carbon atoms) that is derived by the removal of one hydrogen atom from a single carbon atom of a parent alkane, alkene or alkyne. Typical alkyl groups include, but are not limited to, methyl; ethyls such as ethanyl, ethenyl, ethynyl; propyls such as propan-1-yl, propan-2-yl, cyclopropan-1-yl, prop-1-en-1-yl, prop-1-en-2-yl, prop-2-en-1-yl, cycloprop-1-en-1-yl; cycloprop-2-en-1-yl, prop-1-yn-1-yl , prop-2-yn-1-yl, etc.; butyls such as butan-1-yl, butan-2-yl, 2-methyl-propan-1-yl, 2-methyl-propan-2-yl, cyclobutan-1-yl, but-1-en-1-yl, but-1-en-2-yl, 2-methyl-prop-1-en-1-yl, but-2-en-1-yl, but-2-en-2-yl, buta-1,3-dien-1-yl, buta-1,3-dien-2-yl, cyclobut-1-en-1-yl, cyclobut-1-en-3-yl, cyclobuta-1,3-dien-1-yl, but-1-yn-1-yl, but-1-yn-3-yl, but-3-yn-1-yl, etc.; and the like. Where specific levels of saturation are intended, the nomenclature “alkanyl,” “alkenyl” and/or “alkynyl” is used, as defined below. In preferred embodiments, the alkyl groups are (C1-C6) alkyl.

“Alkanyl” by itself or as part of another substituent refers to a saturated branched, straight-chain or cyclic alkyl derived by the removal of one hydrogen atom from a single carbon atom of a parent alkane. Typical alkanyl groups include, but are not limited to, methanyl; ethanyl; propanyls such as propan-1-yl, propan-2-yl (isopropyl), cyclopropan-1-yl, etc.; butanyls such as butan-1-yl, butan-2-yl (sec-butyl), 2-methyl-propan-1-yl (isobutyl), 2-methyl-propan-2-yl (t-butyl), cyclobutan-1-yl, etc.; and the like. In preferred embodiments, the alkanyl groups are (C1-C6) alkanyl.

“Alkenyl” by itself or as part of another substituent refers to an unsaturated branched, straight-chain or cyclic alkyl having at least one carbon-carbon double bond derived by the removal of one hydrogen atom from a single carbon atom of a parent alkene. The group may be in either the cis or trans conformation about the double bond(s). Typical alkenyl groups include, but are not limited to, ethenyl; propenyls such as prop-1-en-1-yl, prop-1-en-2-yl, prop-2-en-1-yl, prop-2-en-2-yl, cycloprop-1-en-1-yl; cycloprop-2-en-1-yl ; butenyls such as but-1-en-1-yl, but-1-en-2-yl, 2-methyl-prop-1-en-1-yl, but-2-en-1-yl, but-2-en-2-yl, buta-1,3-dien-1-yl, buta-1,3-dien-2-yl, cyclobut-1-en-1-yl, cyclobut-1-en-3-yl, cyclobuta-1,3-dien-1-yl, etc.; and the like. In preferred embodiments, the alkenyl group is (C2-C6) alkenyl.

“Alkynyl” by itself or as part of another substituent refers to an unsaturated branched, straight-chain or cyclic alkyl having at least one carbon-carbon triple bond derived by the removal of one hydrogen atom from a single carbon atom of a parent alkyne. Typical alkynyl groups include, but are not limited to, ethynyl; propynyls such as prop-1-yn-1-yl, prop-2-yn-1-yl, etc.; butynyls such as but-1-yn-1-yl, but-1-yn-3-yl, but-3-yn-1-yl , etc.; and the like. In preferred embodiments, the alkynyl group is (C2-C6) alkynyl.

“Alkyldiyl” by itself or as part of another substituent refers to a saturated or unsaturated, branched, straight-chain or cyclic divalent hydrocarbon group having the stated number of carbon atoms (i.e., C1-C6 means from one to six carbon atoms) derived by the removal of one hydrogen atom from each of two different carbon atoms of a parent alkane, alkene or alkyne, or by the removal of two hydrogen atoms from a single carbon atom of a parent alkane, alkene or alkyne. The two monovalent radical centers or each valency of the divalent radical center can form bonds with the same or different atoms. Typical alkyldiyl groups include, but are not limited to, methandiyl; ethyldiyls such as ethan-1,1-diyl, ethan-1,2-diyl, ethen-1,1-diyl, ethen-1,2-diyl; propyldiyls such as propan-1,1-diyl, propan-1,2-diyl, propan-2,2-diyl, propan-1,3-diyl, cyclopropan-1,1-diyl, cyclopropan-1,2-diyl, prop-1-en-1,1-diyl, prop-1-en-1,2-diyl, prop-2-en-1,2-diyl, prop-1-en-1,3-diyl, cycloprop-1-en-1,2-diyl, cycloprop-2-en-1,2-diyl, cycloprop-2-en-1,1-diyl, prop-1-yn-1,3-diyl, etc.; butyldiyls such as, butan-1,1-diyl, butan-1,2-diyl, butan-1,3-diyl, butan-1,4-diyl, butan-2,2-diyl, 2-methyl-propan-1,1-diyl, 2-methyl-propan-1,2-diyl, cyclobutan-1,1-diyl; cyclobutan-1,2-diyl, cyclobutan-1,3-diyl, but-1-en-1,1-diyl, but-1-en-1,2-diyl, but-1-en-1,3-diyl, but-1-en-1,4-diyl, 2-methyl-prop-1-en-1,1-diyl, 2-methanylidene-propan-1,1-diyl, buta-1,3-dien-1,1-diyl, buta-1,3-dien-1,2-diyl, buta-1,3-dien-1,3-diyl, buta-1,3-dien-1,4-diyl, cyclobut-1-en-1,2-diyl, cyclobut-1-en-1,3-diyl, cyclobut-2-en-1,2-diyl, cyclobuta-1,3-dien-1,2-diyl, cyclobuta-1,3-dien-1,3-diyl, but-1-yn-1,3-diyl, but-1-yn-1,4-diyl, buta-1,3-diyn-1,4-diyl, etc.; and the like. Where specific levels of saturation are intended, the nomenclature alkanyldiyl, alkenyldiyl and/or alkynyldiyl is used. Where it is specifically intended that the two valencies are on the same carbon atom, the nomenclature “alkylidene” is used. In preferred embodiments, the alkyldiyl group is (C1-C6) alkyldiyl. Also preferred are saturated acyclic alkanyldiyl groups in which the radical centers are at the terminal carbons, e.g., methandiyl (methano); ethan-1,2-diyl (ethano); propan-1,3-diyl (propano); butan-1,4-diyl (butano); and the like (also referred to as alkylenos, defined infra).

“Alkyleno” by itself or as part of another substituent refers to a straight-chain saturated or unsaturated alkyldiyl group having two terminal monovalent radical centers derived by the removal of one hydrogen atom from each of the two terminal carbon atoms of straight-chain parent alkane, alkene or alkyne. The locant of a double bond or triple bond, if present, in a particular alkyleno is indicated in square brackets. Typical alkyleno groups include, but are not limited to, methano; ethylenos such as ethano, etheno, ethyno; propylenos such as propano, prop[1]eno, propa[1,2]dieno, prop[1]yno, etc.; butylenos such as butano, but[1]eno, but[2]eno, buta[1,3]dieno, but[1]yno, but[2]yno, buta[1,3]diyno, etc.; and the like. Where specific levels of saturation are intended, the nomenclature alkano, alkeno and/or alkyno is used. In preferred embodiments, the alkyleno group is (C1-C6) or (C1-C3) alkyleno. Also preferred are straight-chain saturated alkano groups, e.g., methano, ethano, propano, butano, and the like.

“Heteroalkyl,” Heteroalkanyl,” Heteroalkenyl,” Heteroalkynyl,” Heteroalkyldiyl” and “Heteroalkyleno” by themselves or as part of another substituent refer to alkyl, alkanyl, alkenyl, alkynyl, alkyldiyl and alkyleno groups, respectively, in which one or more of the carbon atoms are each independently replaced with the same or different heteratoms or heteroatomic groups. Typical heteroatoms and/or heteroatomic groups which can replace the carbon atoms include, but are not limited to, —O—, —S—, —S—O—, —NR′—, —PH—, —S(O)—, —S(O)₂—, —S(O)NR′—, —S(O)₂NR′—, and the like, including combinations thereof, where each R′ is independently hydrogen or (C1-C6) alkyl.

“Cycloalkyl” and “Heterocycloalkyl” by themselves or as part of another substituent refer to cyclic versions of “alkyl” and “heteroalkyl” groups, respectively. For heteroalkyl groups, a heteroatom can occupy the position that is attached to the remainder of the molecule. Typical cycloalkyl groups include, but are not limited to, cyclopropyl; cyclobutyls such as cyclobutanyl and cyclobutenyl; cyclopentyls such as cyclopentanyl and cyclopentenyl; cyclohexyls such as cyclohexanyl and cyclohexenyl; and the like. Typical heterocycloalkyl groups include, but are not limited to, tetrahydrofuranyl (e.g., tetrahydrofuran-2-yl, tetrahydrofuran-3-yl, etc.), piperidinyl (e.g., piperidin-1-yl, piperidin-2-yl, etc.), morpholinyl (e.g., morpholin-3-yl, morpholin-4-yl, etc.), piperazinyl (e.g., piperazin-1-yl, piperazin-2-yl, etc.), and the like.

“Acyclic Heteroatomic Bridge” refers to a divalent bridge in which the backbone atoms are exclusively heteroatoms and/or heteroatomic groups. Typical acyclic heteroatomic bridges include, but are not limited to, —O—, —S—, —S—O—, —NR′—, —PH—, —S(O)—, —S(O)₂—, —S(O) NR′—, —S(O)₂NR′—, and the like, including combinations thereof, where each R′ is independently hydrogen or (C1-C6) alkyl.

“Parent Aromatic Ring System” refers to an unsaturated cyclic or polycyclic ring system having a conjugated π electron system. Specifically included within the definition of “parent aromatic ring system” are fused ring systems in which one or more of the rings are aromatic and one or more of the rings are saturated or unsaturated, such as, for example, fluorene, indane, indene, phenalene, tetrahydronaphthalene, etc. Typical parent aromatic ring systems include, but are not limited to, aceanthrylene, acenaphthylene, acephenanthrylene, anthracene, azulene, benzene, chrysene, coronene, fluoranthene, fluorene, hexacene, hexaphene, hexalene, indacene, s-indacene, indane, indene, naphthalene, octacene, octaphene, octalene, ovalene, penta-2,4-diene, pentacene, pentalene, pentaphene, perylene, phenalene, phenanthrene, picene, pleiadene, pyrene, pyranthrene, rubicene, tetrahydronaphthalene, triphenylene, trinaphthalene, and the like, as well as the various hydro isomers thereof.

“Aryl” by itself or as part of another substituent refers to a monovalent aromatic hydrocarbon group having the stated number of carbon atoms (i.e., C5-C15 means from 5 to 15 carbon atoms) derived by the removal of one hydrogen atom from a single carbon atom of a parent aromatic ring system. Typical aryl groups include, but are not limited to, groups derived from aceanthrylene, acenaphthylene, acephenanthrylene, anthracene, azulene, benzene, chrysene, coronene, fluoranthene, fluorene, hexacene, hexaphene, hexalene, as-indacene, s-indacene, indane, indene, naphthalene, octacene, octaphene, octalene, ovalene, penta-2,4-diene, pentacene, pentalene, pentaphene, perylene, phenalene, phenanthrene, picene, pleiadene, pyrene, pyranthrene, rubicene, triphenylene, trinaphthalene, and the like, as well as the various hydro isomers thereof. In preferred embodiments, the aryl group is (C5-C15) aryl, with (C5-C10) being even more preferred. Particularly preferred aryls are cyclopentadienyl, phenyl and naphthyl.

“Arylaryl” by itself or as part of another substituent refers to a monovalent hydrocarbon group derived by the removal of one hydrogen atom from a single carbon atom of a ring system in which two or more identical or non-identical parent aromatic ring systems are joined directly together by a single bond, where the number of such direct ring junctions is one less than the number of parent aromatic ring systems involved. Typical arylaryl groups include, but are not limited to, biphenyl, triphenyl, phenyl-naphthyl, binaphthyl, biphenyl-naphthyl, and the like. Where the number of carbon atoms in an arylaryl group are specified, the numbers refer to the carbon atoms comprising each parent aromatic ring. For example, (C5-C15) arylaryl is an arylaryl group in which each aromatic ring comprises from 5 to 15 carbons, e.g., biphenyl, triphenyl, binaphthyl, phenylnaphthyl, etc. Preferably, each parent aromatic ring system of an arylaryl group is independently a (C5-C15) aromatic, more preferably a (C5-C10) aromatic. Also preferred are arylaryl groups in which all of the parent aromatic ring systems are identical, e.g., biphenyl, triphenyl, binaphthyl, trinaphthyl, etc.

“Biaryl” by itself or as part of another substituent refers to an arylaryl group having two identical parent aromatic systems joined directly together by a single bond. Typical biaryl groups include, but are not limited to, biphenyl, binaphthyl, bianthracyl, and the like. Preferably, the aromatic ring systems are (C5-C15) aromatic rings, more preferably (C5-C10) aromatic rings. A particularly preferred biaryl group is biphenyl.

“Arylalkyl” by itself or as part of another substituent refers to an acyclic alkyl group in which one of the hydrogen atoms bonded to a carbon atom, typically a terminal or sp³ carbon atom, is replaced with an aryl group. Typical arylalkyl groups include, but are not limited to, benzyl, 2-phenylethan-1-yl, 2-phenylethen-1-yl, naphthylmethyl, 2-naphthylethan-1-yl, 2-naphthylethen-1-yl, naphthobenzyl, 2-naphthophenylethan-1-yl and the like. Where specific alkyl moieties are intended, the nomenclature arylalkanyl, arylakenyl and/or arylalkynyl is used. In preferred embodiments, the arylalkyl group is (C6-C21) arylalkyl, e.g., the alkanyl, alkenyl or alkynyl moiety of the arylalkyl group is (C1-C6) and the aryl moiety is (C5-C15). In particularly preferred embodiments the arylalkyl group is (C6-C13), e.g., the alkanyl, alkenyl or alkynyl moiety of the arylalkyl group is (C1-C3) and the aryl moiety is (C5-C10).

“Parent Heteroaromatic Ring System” refers to a parent aromatic ring system in which one or more carbon atoms are each independently replaced with the same or different heteroatoms or heteroatomic groups. Typical heteroatoms or heteroatomic groups to replace the carbon atoms include, but are not limited to, N, NH, P, O, S, S(O), S(O)₂, Si, etc. Specifically included within the definition of “parent heteroaromatic ring systems” are fused ring systems in which one or more of the rings are aromatic and one or more of the rings are saturated or unsaturated, such as, for example, benzodioxan, benzofuran, chromane, chromene, indole, indoline, xanthene, etc. Also included in the definition of “parent heteroaromatic ring system” are those recognized rings that include common substituents, such as, for example, benzopyrone and 1-methyl-1,2,3,4-tetrazole. Specifically excluded from the definition of “parent heteroaromatic ring system” are benzene rings fused to cyclic polyalkylene glycols such as cyclic polyethylene glycols. Typical parent heteroaromatic ring systems include, but are not limited to, acridine, benzimidazole, benzisoxazole, benzodioxan, benzodioxole, benzofuran, benzopyrone, benzothiadiazole, benzothiazole, benzotriazole, benzoxaxine, benzoxazole, benzoxazoline, carbazole, β-carboline, chromane, chromene, cinnoline, furan, imidazole, indazole, indole, indoline, indolizine, isobenzofuran, isochromene, isoindole, isoindoline, isoquinoline, isothiazole, isoxazole, naphthyridine, oxadiazole, oxazole, perimidine, phenanthridine, phenanthroline, phenazine, phthalazine, pteridine, purine, pyran, pyrazine, pyrazole, pyridazine, pyridine, pyrimidine, pyrrole, pyrrolizine, quinazoline, quinoline, quinolizine, quinoxaline, tetrazole, thiadiazole, thiazole, thiophene, triazole, xanthene, and the like.

“Heteroaryl” by itself or as part of another substituent refers to a monovalent heteroaromatic group having the stated number of ring atoms (e.g., “5-14 membered” means from 5 to 14 ring atoms) derived by the removal of one hydrogen atom from a single atom of a parent heteroaromatic ring system. Typical heteroaryl groups include, but are not limited to, groups derived from acridine, benzimidazole, benzisoxazole, benzodioxan, benzodiaxole, benzofuran, benzopyrone, benzothiadiazole, benzothiazole, benzotriazole, benzoxazine, benzoxazole, benzoxazoline, carbazole, β-carboline, chromane, chromene, cinnoline, furan, imidazole, indazole, indole, indoline, indolizine, isobenzofuran, isochromene, isoindole, isoindoline, isoquinoline, isothiazole, isoxazole, naphthyridine, oxadiazole, oxazole, perimidine, phenanthridine, phenanthroline, phenazine, phthalazine, pteridine, purine, pyran, pyrazine, pyrazole, pyridazine, pyridine, pyrimidine, pyrrole, pyrrolizine, quinazoline, quinoline, quinolizine, quinoxaline, tetrazole, thiadiazole, thiazole, thiophene, triazole, xanthene, and the like, as well as the various hydro isomers thereof. In preferred embodiments, the heteroaryl group is a 5-14 membered heteroaryl, with 5-10 membered heteroaryl being particularly preferred.

“Heteroaryl-Heteroaryl” by itself or as part of another substituent refers to a monovalent heteroaromatic group derived by the removal of one hydrogen atom from a single atom of a ring system in which two or more identical or non-identical parent heteroaromatic ring systems are joined directly together by a single bond, where the number of such direct ring junctions is one less than the number of parent heteroaromatic ring systems involved. Typical heteroaryl-heteroaryl groups include, but are not limited to, bipyridyl, tripyridyl, pyridylpurinyl, bipurinyl, etc. Where the number of atoms are specified, the numbers refer to the number of atoms comprising each parent heteroaromatic ring systems. For example, 5-15 membered heteroaryl-heteroaryl is a heteroaryl-heteroaryl group in which each parent heteroaromatic ring system comprises from 5 to 15 atoms, e.g., bipyridyl, tripuridyl, etc. Preferably, each parent heteroaromatic ring system is independently a 5-15 membered heteroaromatic, more preferably a 5-10 membered heteroaromatic. Also preferred are heteroaryl-heteroaryl groups in which all of the parent heteroaromatic ring systems are identical.

“Biheteroaryl” by itself or as part of another substituent refers to a heteroaryl-heteroaryl group having two identical parent heteroaromatic ring systems joined directly together by a single bond. Typical biheteroaryl groups include, but are not limited to, bipyridyl, bipurinyl, biquinolinyl, and the like. Preferably, the heteroaromatic ring systems are 5-15 membered heteroaromatic rings, more preferably 5-10 membered heteroaromatic rings.

“Heteroarylalkyl” by itself or as part of another substituent refers to an acyclic alkyl group in which one of the hydrogen atoms bonded to a carbon atom, typically a terminal or sp³ carbon atom, is replaced with a heteroaryl group. Where specific alkyl moieties are intended, the nomenclature heteroarylalkanyl, heteroarylakenyl and/or heteroarylalkynyl is used. In preferred embodiments, the heteroarylalkyl group is a 6-21 membered heteroarylalkyl, e.g., the alkanyl, alkenyl or alkynyl moiety of the heteroarylalkyl is (C1-C6) alkyl and the heteroaryl moiety is a 5-15-membered heteroaryl. In particularly preferred embodiments, the heteroarylalkyl is a 6-13 membered heteroarylalkyl, e.g., the alkanyl, alkenyl or alkynyl moiety is (C1-C3) alkyl and the heteroaryl moiety is a 5-10 membered heteroaryl.

“Halogen” or “Halo” by themselves or as part of another substituent, unless otherwise stated, refer to fluoro, chloro, bromo and iodo.

“Haloalkyl” by itself or as part of another substituent refers to an alkyl group in which one or more of the hydrogen atoms is replaced with a halogen. Thus, the term “haloalkyl” is meant to include monohaloalkyls, dihaloalkyls, trihaloalkyls, etc. up to perhaloalkyls. For example, the expression “(C1-C2) haloalkyl” includes fluoromethyl, difluoromethyl, trifluoromethyl, 1-fluoroethyl, 1,1-difluoroethyl, 1,2-difluoroethyl, 1,1,1-trifluoroethyl, perfluoroethyl, etc.

The above-defined groups may include prefixes and/or suffixes that are commonly used in the art to create additional well-recognized substituent groups. As examples, “alkyloxy” or “alkoxy” refers to a group of the formula —OR″, “alkylamine” refers to a group of the formula —NHR″ and “dialkylamine” refers to a group of the formula —NR″R″, where each R″ is independently an alkyl. As another example, “haloalkoxy” or “haloalkyloxy” refers to a group of the formula —OR′″, where R′″ is a haloalkyl.

“Protecting group” refers to a group of atoms that, when attached to a reactive functional group in a molecule, mask, reduce or prevent the reactivity of the functional group. Typically, a protecting group may be selectively removed as desired during the course of a synthesis. Examples of protecting groups can be found in Greene and Wuts, Protective Groups in Organic Chemistry, 3rd Ed., 1999, John Wiley & Sons, NY and Harrison et al., Compendium of Synthetic Organic Methods, Vols. 1-8, 1971-1996, John Wiley & Sons, NY. Representative amino protecting groups include, but are not limited to, formyl, acetyl, trifluoroacetyl, benzyl, benzyloxycarbonyl (“CBZ”), tert-butoxycarbonyl (“Boc”), trimethylsilyl (“TMS”), 2-trimethylsilyl-ethanesulfonyl (“TES”), trityl and substituted trityl groups, allyloxycarbonyl, 9-fluorenylmethyloxycarbonyl (“FMOC”), nitro-veratryloxycarbonyl (“NVOC”) and the like. Representative hydroxyl protecting groups include, but are not limited to, those where the hydroxyl group is either acylated or alkylated such as benzyl and trityl ethers, as well as alkyl ethers, tetrahydropyranyl ethers, trialkylsilyl ethers (e.g., TMS or TIPPS groups) and allyl ethers.

“Prodrug” refers to a derivative of an active 2,4-pyrimidinediamine compound (drug) that requires a transformation under the conditions of use, such as within the body, to release the active 2,4-pyrimidinediamine drug. Prodrugs are frequently, but not necessarily, pharmacologically inactive until converted into the active drug. Prodrugs are typically obtained by masking a functional group in the 2,4-pyrimidinediamine drug believed to be in part required for activity with a progroup (defined below) to form a promoiety which undergoes a transformation, such as cleavage, under the specified conditions of use to release the functional group, and hence the active 2,4-pyrimidinediamine drug. The cleavage of the promoiety may proceed spontaneously, such as by way of a hydrolysis reaction, or it may be catalyzed or induced by another agent, such as by an enzyme, by light, by acid or base, or by a change of or exposure to a physical or environmental parameter, such as a change of temperature. The agent may be endogenous to the conditions of use, such as an enzyme present in the cells to which the prodrug is administered or the acidic conditions of the stomach, or it may be supplied exogenously.

A wide variety of progroups, as well as the resultant promoieties, suitable for masking functional groups in the active 2,4-pyrimidinediamines compounds to yield prodrugs are well-known in the art. For example, a hydroxyl functional group may be masked as a sulfonate, ester or carbonate promoiety, which may be hydrolyzed in vivo to provide the hydroxyl group. An amino functional group may be masked as an amide, carbamate, imine, urea, phosphenyl, phosphoryl or sulfenyl promoiety, which may be hydrolyzed in vivo to provide the amino group. A carboxyl group may be masked as an ester (including silyl esters and thioesters), amide or hydrazide promoiety, which may be hydrolyzed in vivo to provide the carboxyl group. Other specific examples of suitable progroups and their respective promoieties will be apparent to those of skill in the art.

“Progroup” refers to a type of protecting group that, when used to mask a functional group within an active 2,4-pyrimidinediamine drug to form a promoiety, converts the drug into a prodrug. Progroups are typically attached to the functional group of the drug via bonds that are cleavable under specified conditions of use. Thus, a progroup is that portion of a promoiety that cleaves to release the functional group under the specified conditions of use. As a specific example, an amide promoiety of the formula —NH—C(O)CH₃ comprises the progroup —C(O)CH₃.

“Fc Receptor” refers to a member of the family of cell surface molecules that binds the Fc portion (containing the specific constant region) of an immunoglobulin. Each Fc receptor binds immunoglobulins of a specific type. For example the Fcα receptor (“FcαR”) binds IgA, the FcεR binds IgE and the FcγR binds IgG.

The FcαR family includes the polymeric Ig receptor involved in epithelial transport of IgA/IgM, the mycloid specific receptor RcαRI (also called CD89), the Fcα/μR and at least two alternative IgA receptors (for a recent review see Monteiro & van de Winkel, 2003, Annu. Rev. Immunol, advanced e-publication. The FcαRI is expressed on neutrophils, eosinophils, moncytes/macrophages, dendritic cells and kupfer cells. The FcαRI inclues one alpha chain and the FcR gamma homodimer that bears an activation motif (ITAM) in the cytoplasmic domain and phosphorylates Syk kinase.

The FcεR family includes two types, designated FcεRI and FcεRII (also known as CD23). FcεRI is a high affinity receptor (binds IgE with an affinity of about 10 ¹⁰M⁻¹) found on mast, basophil and eosinophil cells that anchors monomeric IgE to the cell surface. The FcεRI possesses one alpha chain, one beta chain and the gamma chain homodimer discussed above. The FcεRII is a low affinity receptor expressed on mononuclear phagocytes, B lymphocytes, eosinophils and platelets. The FcεRII comprises a single polypeptide chain and does not include the gamma chain homodimer.

The FcγR family includes three types, designated FcγRI (also known as CD64), FcγRII (also known as CD32) and FcγRIII (also known as CD16). FcγRI is a high affinity receptor (binds IgG1 with an affinity of 10⁸M⁻¹) found on mast, basophil, mononuclear, neutrophil, eosinophil, deudritic and phagocyte cells that anchors nomomeric IgG to the cell surface. The FcγRI includes one alpha chain and the gamma chain dimer shared by FcαRI and FcεRI.

The FcγRII is a low affinity receptor expressed on neutrophils, monocytes, eosinophils, platelets and B lymphocytes. The FcγRII includes one alpha chain, and does not include the gamma chain homodimer discussed above.

The FcγRIII is a low affinity (bindes IgG1 with an affinity of 5×10⁵M⁻¹) expressed on NK, eosinophil, macrophage, neutrophil and mast cells. It comprises one alpha chain and the gamma homodimer shared by FcαRI, FcεRI and FcγRI.

Skilled artisans will recognize that the subunit structure and binding properties of these various Fc receptors, cell types expressing them, are not completely characterized. The above discussion merely reflects the current state-of-the-art regarding these receptors (see, e.g., Immunobiology: The Immune System in Health & Disease, 5^(th) Edition, Janeway et al., Eds, 2001, ISBN 0-8153-3642-x, FIG. 9.30 at pp. 371), and is not intended to be limiting with respect to the myriad receptor signaling cascades that can be regulated with the compounds described herein.

“Fc Receptor-Mediated Degranulation” or “Fc Receptor-Induced Degranulation” refers to degranulation that proceeds via an Fc receptor signal transduction cascade initiated by crosslinking of an Fc receptor.

“IgE-Induced Degranulation” or “FcεRI-Mediated Degranulation” refers to degranulation that proceeds via the IgE receptor signal transduction cascade initiated by crosslinking of FcεR1-bound IgE. The crosslinking may be induced by an IgE-specific allergen or other multivalent binding agent, such as an anti-IgE antibody. Referring to FIG. 2, in mast and/or basophil cells, the FcεRI signaling cascade leading to degranulation may be broken into two stages: upstream and downstream. The upstream stage includes all of the processes that occur prior to calcium ion mobilization (illustrated as “Ca²⁺” in FIG. 2; see also FIG. 3). The downstream stage includes calcium ion mobilization and all processes downstream thereof. Compounds that inhibit FcεRI-mediated degranulation may act at any point along the FcεRI-mediated signal transduction cascade. Compounds that selectively inhibit upstream FcεRI-mediated degranulation act to inhibit that portion of the FcεRI signaling cascade upstream of the point at which calcium ion mobilization is induced. In cell-based assays, compounds that selectively inhibit upstream FcεRI-mediated degranulation inhibit degranulation of cells such as mast or basophil cells that are activated or stimulated with an IgE-specific allergen or binding agent (such as an anti-IgE antibody) but do not appreciably inhibit degranulation of cells that are activated or stimulated with degranulating agents that bypass the FcεRI signaling pathway, such as, for example the calcium ionophores ionomycin and A23187.

“IgG-Induced Degranulation” or “FcγRI-Mediated Degranulation” refers to degranulation that proceeds via the FcγRI signal transduction cascade initiated by crosslinking of FcγRI-bound IgG. The crosslinking may be induced by an IgG-specific allergen or another multivalent binding agent, such as an anti-IgG or fragment antibody. Like the FcεRI signaling cascade, in mast and basophil cells the FcγRI signaling cascade also leads to degranulation which may be broken into the same two stages: upstream and downstream. Similar to FcεRI-mediated degranulation, compounds that selectively inhibit upstream FcγRI-mediated degranulation act upstream of the point at which calcium ion mobilization is induced. In cell-based assays, compounds that selectively inhibit upstream FcγRI-mediated degranulation inhibit degranulation of cells such as mast or basophil cells that are activated or stimulated with an IgG-specific allergen or binding agent (such as an anti-IgG antibody or fragment) but do not appreciably inhibit degranulation of cells that are activated or stimulated with degranulating agents that bypass the FcγRI signaling pathway, such as, for example the calcium ionophores ionomycin and A23187.

“Ionophore-Induced Degranulation” or “Ionophore-Mediated Degranulation” refers to degranulation of a cell, such as a mast or basophil cell, that occurs upon exposure to a calcium ionophore such as, for example, ionomycin or A23187.

“Syk Kinsase” refers to the well-known 72 kDa non-receptor (cytoplasmic) spleen protein tyrosine kinase expressed in B-cells and other hematopoetic cells. Syk kinase includes two consensus Src-homology 2 (SH2) domains in tandem that bind to phosphorylated immunoreceptor tyrosine-based activation motifs (“ITAMs”), a “linker” domain and a catalytic domain (for a review of the structure and function of Syk kinase see Sada et al., 2001, J. Biochem. (Tokyo) 130:177-186); see also Turner et al., 2000, Immunology Today 21:148-154). Syk kinase has been extensively studied as an effector of B-cell receptor (BCR) signaling (Turner et al., 2000, supra). Syk kinase is also critical for tyrosine phosphorylation of multiple proteins which regulate important pathways leading from immunoreceptors, such as Ca²⁺ mobilization and mitogen-activated protein kinase (MAPK) cascades (see, e.g., FIG. 2) and degranulation. Syk kinase also plays a critical role in integrin signaling in neutrophils (see, e.g., Mocsai et al. 2002, Immunity 16:547-558).

As used herein, Syk kinase includes kinases from any species of animal, including but not limited to, homosapiens, simian, bovine, porcine, rodent, etc., recognized as belonging to the Syk family. Specifically included are isoforms, splice variants, allelic variants, mutants, both naturally occuring and man-made. The amino acid sequences of such Syk kinases are well known and available from GENBANK. Specific examples of mRNAs encoding different isoforms of human Syk kinase can be found at GENBANK accession no. gi|21361552|ref|NM_(—)003177.2|, gi|496899|emb|Z29630.1|HSSYKPTK[496899] and gi|15030258|gb|BC011399.1|BC011399[15030258], which are incorporated herein by reference.

Skilled artisans will appreciate that tyrosine kinases belonging to other families may have active sites or binding pockets that are similar in three-dimensional structure to that of Syk. As a consequence of this structural similarity, such kinases, referred to herein as “Syk mimics,” are expected to catalyze phosphorylation of substrates phosphorylated by Syk. Thus, it will be appreciated that such Syk mimics, signal transduction cascades in which such Syk mimics play a role and biological responses effected by such Syk mimics and Syk mimic-dependent signaling cascades may be regulated, and in particular inhibited, with the 2,4-pyrimidinediamine compounds described herein.

“Syk-Dependent Signaling Cascade” refers to a signal transduction cascade in which Syk kinase plays a role. Non-limiting examples of such Syk-dependent signaling cascades include the FcαRI, FcεRI, FcγRI, FcγRIII, BCR and integrin signaling cascades.

6.2 The 2,4-Pyrimidinediamine Compounds

The compounds of the invention are generally 2,4-pyrimidinediamine compounds according to structural formula (I):

including salts, hydrates, solvates and N-oxides thereof, wherein:

L¹ and L² are each, independently of one another, selected from the group consisting of a direct bond and a linker;

R² is selected from the group consisting of (C1-C6) alkyl optionally substituted with one or more of the same or different R⁸ groups, (C3-C8) cycloalkyl optionally substituted with one or more of the same or different R⁸ groups, cyclohexyl optionally substituted with one or more of the same or different R⁸ groups, 3-8 membered cycloheteroalkyl optionally substituted with one or more of the same or different R⁸ groups, (C5-C15) aryl optionally substituted with one or more of the same or different R⁸ groups, phenyl optionally substituted with one or more of the same or different R⁸ groups and 5-15 membered heteroaryl optionally substituted with one or more of the same or different R⁸ groups;

R⁴ is selected from the group consisting of hydrogen, (C1-C6) alkyl optionally substituted with one or more of the same or different R⁸ groups, (C3-C8) cycloalkyl optionally substituted with one or more of the same or different R⁸ groups, cyclohexyl optionally substituted with one or more of the same or different R⁸ groups, 3-8 membered cycloheteroalkyl optionally substituted with one or more of the same or different R⁸ groups, (C5-C15) aryl optionally substituted with one or more of the same or different R⁸ groups, phenyl optionally substituted with one or more of the same or different R⁸ groups and 5-15 membered heteroaryl optionally substituted with one or more of the same or different R⁸ groups;

R⁵ is selected from the group consisting of R⁶, (C1-C6) alkyl optionally substituted with one or more of the same or different R⁸ groups, (C1-C4) alkanyl optionally substituted with one or more of the same or different R⁸ groups, (C2-C4) alkenyl optionally substituted with one or more of the same or different R⁸ groups and (C2-C4) alkynyl optionally substituted with one or more of the same or different R⁸ groups;

each R⁶ is independently selected from the group consisting of hydrogen, an electronegative group, —OR^(d), —SR^(d), (C1-C3) haloalkyloxy, (C1-C3) perhaloalkyloxy, —NR^(c)R^(c), halogen, (C1-C3) haloalkyl,(C1-C3) perhaloalkyl, —CF₃, —CH₂CF₃, —CF₂CF₃, —CN, —NC, —OCN, —SCN, —NO, —NO₂, —N₃, —S(O)R^(d), —S(O)₂R^(d), —S(O)₂OR^(d), —S(O)NR^(c)R^(c), —S(O)₂NR^(c)R^(c), —OS(O)R^(d), —OS(O)₂R^(d), —OS(O)₂OR^(d), —OS(O)NR^(c)R^(c), —OS(O)₂NR^(c)R^(c), —C(O)R^(d), —C(O)OR^(d), —C(O)NR^(c)R^(c), —C(NH)NR^(c)R^(c), —OC(O)R^(d), —SC(O)R^(d), —OC(O)OR^(d), —SC(O)OR^(d), —OC(O)NR^(c)R^(c), —SC(O)NR^(c)R^(c), —OC(NH)NR^(c)R^(c), —SC(NH)NR^(c)R^(c), —[NHC(O)]_(n)R^(d), —[NHC(O)]_(n)OR^(d), —[NHC(O)]_(n)NR^(c)R^(c) and —[NHC(NH)]_(n)NR^(c)R^(c), (C5-C10) aryl optionally substituted with one or more of the same or different R⁸ groups, phenyl optionally substituted with one or more of the same or different R⁸ groups, (C6-C16) arylalkyl optionally substituted with one or more of the same or different R⁸ groups, 5-10 membered heteroaryl optionally substituted with one or more of the same or different R⁸ groups and 6-16 membered heteroarylalkyl optionally substituted with one or more of the same or different R⁸ groups;

R⁸ is selected from the group consisting of R^(a), R^(b), R^(a) substituted with one or more of the same or different R^(a) or R^(b), —OR^(a) substituted with one or more of the same or different R^(a) or R^(b), —B(OR^(a))₂, —B(NR^(c)R^(c))₂, —(CH₂)_(m)—R^(b), —(CHR^(a))_(m)—R^(b), —O—(CH₂)_(m)—R^(b), —S—(CH₂)_(m)—R^(b), —O—CHR^(a)R^(b), —O—CR^(a)(R)₂, —O—(CHR^(a))_(m)—R^(b), —O—(CH₂)_(m)—CH[(CH₂)_(m)R^(b)]R^(b), —S—(CHR^(a))_(m)—R^(b), —C(O)NH—(CH₂)_(m)—R^(b), —C(O)NH—(CHR^(a))_(m)—R^(b), —O—(CH₂)_(m)—C(O)NH—(CH₂)_(m)—R^(b), —S—(CH₂)_(m)—C(O)NH—(CH₂)_(m)—R^(b), —O—(CHR^(a))_(m)—C(O)NH—(CHR^(a))_(m)—R^(b)—S—(CHR^(a))_(m)—C(O)NH—(CHR^(a))_(m)—R^(b), —NH—(CH₂)_(m)—R^(b), —NH—(CHR^(a))_(m)—R^(b), —NH[(CH₂)_(m)R^(b)], —N[(CH₂)_(m)R^(b)]₂, —NH—C(O)—NH—(CH₂)_(m)—R^(b), —NH—C(O)—(CH₂)_(m)—CHR^(b)R^(b) and —NH—(CH₂)_(m)—C(O)—NH—(CH₂)_(m)—R^(b);

each R^(a) is independently selected from the group consisting of hydrogen, (C1-C6) alkyl, (C3-C8) cycloalkyl, cyclohexyl, (C4-C11) cycloalkylalkyl, (C5-C10) aryl, phenyl, (C6-C16) arylalkyl, benzyl, 2-6 membered heteroalkyl, 3-8 membered cycloheteroalkyl, morpholinyl, piperazinyl, homopiperazinyl, piperidinyl, 4-11 membered cycloheteroalkylalkyl, 5-10 membered heteroaryl and 6-16 membered heteroarylalkyl;

each R^(b) is a suitable group independently selected from the group consisting of ═O, —OR^(d), (C1-C3) haloalkyloxy, —OCF₃, ═S, —SR^(d), ═NR^(d), ═NOR^(d), —NR^(c)R^(c), halogen, —CF₃, —CN, —NC, —OCN, —SCN, —NO, —NO₂, ═N₂, —N₃, —S(O)R^(d), —S(O)₂R^(d), —S(O)₂OR^(d), —S(O)NR^(c)R^(c), —S(O)₂NR^(c)R^(c), —OS(O)R^(d), —OS(O)₂R^(d), —OS(O)₂OR^(d), —OS(O)₂NR^(c)R^(c), —C(O)R^(d), —C(O)OR^(d), —C(O)NR^(c)R^(c), —C(NH)NR^(c)R^(c), —C(NR^(a))NR^(c)R^(c), —C(NOH)R^(a), —C(NOH)NR^(c)R^(c), —OC(O)R^(d), —OC(O)OR^(d), —OC(O)NR^(c)R^(c), —OC(NH)NR^(c)R^(c), —OC(NR^(a))NR^(c)R^(c), —[NHC(O)]_(n)R^(d), —[NR^(a)C(O)]_(n)R^(d), —[NHC(O)]_(n)OR^(d), —NR^(a)C(O)]_(n)OR^(d), —[NHC(O)]_(n)NR^(c)R^(c), —[NR^(a)C(O)]_(n)NR^(c)R^(c), —[NHC(NH)]_(n)NR^(c)R^(c) and —[NR^(a)C(NR^(a))]_(n)NR^(c)R^(c);

each R^(c) is independently R^(a), or, alternatively, each R^(c) is taken together with the nitrogen atom to which it is bonded to form a 5 to 8-membered cycloheteroalkyl or heteroaryl which may optionally include one or more of the same or different additional heteroatoms and which is optionally substituted with one or more of the same or different R^(a) or suitable R^(b) groups;

each R^(d) is independently R^(a);

each m is independently an integer from 1 to 3; and

each n is independently an integer from 0 to 3.

In the compounds of structural formula (I), L¹ and L² represent, independently of one another, a direct bond or a linker. Thus, as will be appreciated by skilled artisans, the substituents R² and/or R⁴ may be bonded either directly to their respective nitrogen atoms or, alternatively, spaced away from their respective nitrogen atoms by way of a linker. The identity of the linker is not critical and typical suitable linkers include, but are not limited to, (C1-C6) alkyldiyls, (C1-C6) alkanos and (C1-C6) heteroalkyldiyls, each of which may be optionally substituted with one or more of the same or different R⁸ groups, where R⁸ is as previously defined for structural formula (I). In a specific embodiment, L¹ and L² are each, independently of one another, selected from the group consisting of a direct bond, (C1-C3) alkyldiyl optionally substituted with one or more of the same or different R^(a), suitable R^(b) or R⁹ groups and 1-3 membered heteroalkyldiyl optionally substituted with one or more of the same or different R^(a), suitable R^(b) or R⁹ groups, wherein R⁹ is selected from the group consisting of (C1-C3) alkyl, —OR^(a), —C(O)OR^(a), (C5-C10) aryl optionally substituted with one or more of the same or different halogens, phenyl optionally substituted with one or more of the same or different halogens, 5-10 membered heteroaryl optionally substituted with one or more of the same or different halogens and 6 membered heteroaryl optionally substituted with one or more of the same or different halogens; and R^(a) and R^(b) are as previously defined for structural formula (I). Specific R⁹ groups that may be used to substitute L¹ and L² include —OR^(a), —C(O)OR^(a), phenyl, halophenyl and 4-halophenyl, wherein R^(a) is as previously defined for structural formula (I).

In another specific embodiment, L¹ and L² are each, independently of one another, selected from the group consisting of methano, ethano and propano, each of which may be optionally monosubstituted with an R⁹ group, where R⁹is as previously defined above.

In all of the above embodiments, specific R^(a) groups that may be included in R⁹ groups are selected from the group consisting of hydrogen, (C1-C6) alkyl, phenyl and benzyl.

In still another specific embodiment, L¹ and L² are each a direct bond such that the 2,4-pyrimidinediamine compounds of the invention are compounds according to structural formula (Ia):

including salts, hydrates, solvates and N-oxides thereof, wherein R², R⁴, R⁵ and R⁶ are as previously defined for structural formula (I). Additional specific embodiments of the 2,4-pyrimidinediamine compounds of the invention are described below.

In a first embodiment of the compounds of structural formulae (I) and (Ia), R², R⁴, R⁵, R⁶, L¹ and L² are as previously defined for their respective structures (I) and (Ia), with the proviso that R² is not 3,4,5-trimethoxyphenyl, 3,4,5-tri (C1-C6) alkoxyphenyl or

where R²¹, R²² and R²³ are as defined for R¹, R² and R³, respectively of U.S. Pat. No. 6,235,746, the disclosure of which is incorporated by reference. In a specific embodiment of this first embodiment, R²¹ is hydrogen, halo, straight-chain or branched (C1-C6) alkyl optionally substituted with one or more of the same or different R²⁵ groups, hydroxyl, (C1-C6) alkoxy optionally substituted with one or more of the same or different phenyl or R²⁵ groups, thiol (—SH), (C1-C6) alkylthio optionally substituted with one or more of the same or different phenyl or R²⁵ groups, amino (—NH₂), —NHR²⁶ or —NR²⁶R²⁶; R²² and R²³ are each, independently of one another, a (C1-C6) straight-chain or branched alkyl optionally substituted with one or more of the same or different R²⁵ groups; R²⁵ is selected from the group consisting of halo, hydroxyl, (C1-C6) alkoxy, thiol, (C1-C6) alkylthio, (C1-C6) alkylamino and (C1-C6) dialkylamino; and each R²⁶ is independently a (C1-C6) alkyl optionally substituted with one or more of the same or different phenyl or R²⁵ groups or a —C(O)R²⁷, where R²⁷ is a (C1-C6) alkyl optionally substituted with one or more of the same or different phenyl or R²⁵ groups.

In another specific embodiment of this first embodiment, R²¹ is methoxy optionally substituted with one or more of the same or different halo groups and/or R²² and R²³ are each, independently of one another, a methyl or ethyl optionally substituted with one or more of the same or different halo groups.

In a second embodiment of the compounds of structural formulae (I) and (Ia), R², R⁴, R⁵ and L² are as previously described for their respective structures (I) and (Ia), L¹ is a direct bond and R⁶ is hydrogen, with the proviso that R² is not 3,4,5-trimethoxyphenyl, 3,4,5-tri (C1-C6) alkoxyphenyl or

where R²¹, R²² and R²³ are as defined above, in connection with the first embodiment.

In a third embodiment, the 2,4-pyrimidinediamine compounds of structural formulae (I) and (Ia) exclude one or more of the following compounds:

N2,N4-bis(4-ethoxyphenyl)-5-fluoro-2,4-pyrimidinediamine (R070790);

N2,N4-bis(2-methoxyphenyl)-5-fluoro-2,4-pyrimidinediamine (R081166);

N2,N4-bis(4-methoxyphenyl)-5-fluoro-2,4-pyrimidinediamine (R088814);

N2,N4-bis(2-chlorophenyl)-5-fluoro-2,4-pyrimidinediamine (R088815);

N2,N4-bisphenyl-5-fluoro-2,4-pyrimidinediamine (R091880);

N2,N4-bis(3-methylphenyl)-5-fluoro-2,4-pyrimidinediamine (R092788);

N2,N4-bis(3-chlorophenyl)-5-fluoro-2,4-pyrimidinediamine (R067962);

N2,N4-bis(2,5-dimethylphenyl)-5-fluoro-2,4-pyrimidinediamine (R067963);

N2,N4-bis(3,4-dimethylphenyl)-5-fluoro-2,4-pyrimidinediamine (R067964);

N2,N4-bis(4-chlorophenyl)-5-fluoro-2,4-pyrimidinediamine (R0707153);

N2,N4-bis(2,4-dimethylphenyl)-5-fluoro-2,4-pyrimidinediamine (R070791);

N2,N4-bis(3-bromophenyl)-5-fluoro-2,4-pyrimidinediamine (R008958);

N2,N4-bis(phenyl)-5-fluoro-2,4-pyrimidinediamine;

N2,N4-bis(morpholino)-5-fluoro-2,4-pyrimidinediamine; and

N2,N4-bis[(3-chloro-4-methoxyphenyl)]-5-fluoro-2,4-pyrimidinediamine.

In a fourth embodiment, the compounds of structural formulae (I) and (Ia) exclude compounds according to the following structural formula (Ib):

wherein R²⁴ is (C1-C6) alkyl; and R²¹, R²² and R²³ are as previously defined in connection with the first embodiment.

In a fifth embodiment, the compounds of structural formulae (I) and (Ia) exclude the compounds described in Examples 1-141 of U.S. Pat. No. 6,235,746, the disclosure of which is incorporated herein by reference.

In a sixth embodiment, the compounds of structural formulae (I) and (Ia) exclude compounds defined by formula (1) or formula 1(a) of this U.S. Pat. No. 6,235,746 (see, e.g., the disclosure at Col. 1, line 48 through Col. 7, line 49 and Col. 8, lines 9-36, which is incorporated by reference).

In a seventh embodiment, the compounds of structural formulae (I) and (Ia) exclude compounds in which R⁵ is cyano or —C(O)NHR, where R is hydrogen or (C1-C6) alkyl, when R² is a substituted phenyl; R4 is a substituted or unsubstituted (C1-C6) alkyl, (C₃-C₈) cycloalkyl, 3-8 membered cycloheteralkyl or 5-15 membered heteroaryl; and R⁶ is hydrogen.

In an eighth embodiment, the compounds of structural formulae (I) and (Ia) exclude the compounds defined by formulae (I) and (X) of WO 02/04429 or any compound disclosed in WO 02/04429, the disclosure of which is incorporated herein by reference.

In a ninth embodiment of the compounds of structural formulae (I) and (Ia), when R⁵ is cyano or —C(O)NHR, where R is hydrogen or (C1-C6) alkyl; and R⁶ is hydrogen, then R² is other than a substituted phenyl group.

In a tenth embodiment, the compounds of structural formulae (I) and (Ia) exclude compounds in which R² and R⁴ are each independently a substituted or unsubstituted pyrrole or indole ring which is attached to the remainder of the molecule via its ring nitrogen atom.

In an eleventh embodiment, the compounds of structural formulae (I) and (Ia) exclude compounds defined by formulae (I) and (IV) of U.S. Pat. No. 4,983,608 or any compound disclosed in U.S. Pat. No. 4,983,608, the disclosure of which is incorporated herein by reference.

Those of skill in the art will appreciate that in the compounds of formulae (I) and (Ia), R² and R⁴ may be the same or different, and may vary broadly. When R² and/or R⁴ are optionally substituted rings, such as optionally substituted cycloalkyls, cycloheteroalkyls, aryls and heteroaryls, the ring may be attached to the remainder of the molecule through any available carbon or heteroatom. The optional substituents may be attached to any available carbon atoms and/or heteroatoms.

In a twelfth embodiment of the compounds of structural formulae (I) and (Ia), R² and/or R⁴ is an optionally substituted phenyl or an optionally substituted (C5-C15) aryl, subject to the provisos that (1) when R⁶ is hydrogen, then R² is not 3,4,5-trimethoxyphenyl or 3,4,5-tri (C1-C6) alkoxyphenyl; (2) when R² is a 3,4,5-trisubstituted phenyl, then the substituents at the 3- and 4-positions are not simultaneously methoxy or (C1-C6) alkoxy; or (3) when R⁶ is hydrogen and R⁴ is (C1-C6) alkyl, (C₃-C8) cycloalkyl, 3-8 membered cycloheteroalkyl or 5-15 membered heteroaryl, then R⁵ is other than cyano. Alternatively, R² is subject to the provisos described in connection with the first or second embodiments. The optionally substituted aryl or phenyl group may be attached to the remainder of the molecule through any available carbon atom. Specific examples of optionally substituted phenyls include phenyls that are optionally mono-, di- or tri-substituted with the same or different R⁸ groups, where R⁸ is as previously defined for structural formula (I) and subject to the above provisos. When the phenyl is mono-substituted, the R⁸ substituent may be positioned at either the ortho, meta or para position. When positioned at the ortho, meta or para position, R⁸ is preferably selected from the group consisting of (C1-C10) alkyl, (C1-C10) branched alkyl, —OR^(a) optionally substituted with one or more of the same or different R^(b) groups, —O—C(O)OR^(a), —O—(CH₂)_(m)C(O)OR^(a), —C(O)OR^(a), —O—(CH₂)_(m)NR^(c)R^(c), —O—C(O)NR^(c)R^(c), —O—(CH₂)_(m)—C(O)NR^(c)R^(c), —O—C(NH)NR^(c)R^(c), —O—(CH₂)_(m)—C(NH)NR^(c)R^(c) and —NH—(CH₂)_(m)—NR^(c)R^(c), where m, R^(a) and R^(c) are as previously defined for structural formula (I). In one embodiment of these compounds, —NR^(c)R^(c) is a 5-6 membered heteroaryl which optionally includes one or more of the same or different additional heteroatoms. Specific examples of such 5-6 membered heteroaryls include, but are not limited to, oxadiazolyl, triazolyl, thiazolyl, oxazolyl, tetrazolyl and isoxazolyl.

In another embodiment of these compounds, —NR^(c)R^(c) is a 5-6 membered saturated cycloheteroalkyl ring which optionally includes one or more of the same or different heteroatoms. Specific examples of such cycloheteroalkyls include, but are not limited to, pyrrolidinyl, pyrazolidinyl, imidazolidinyl, piperidinyl, piperazinyl and morpholinyl.

In still another embodiment of these compounds, each R^(a) is independently a (C1-C6) alkyl and/or each —NR^(c)R^(c) is —NHR^(a), where R^(a) is a (C1-C6) alkyl. In one specific embodiment, R⁸ is —O—CH₂—C(O)NHCH₃. In another specific embodiment R⁸ is —OH.

When the phenyl is di-substituted or tri-substituted, the R⁸ substituents may be positioned at any combination of positions. For example, the R⁸ substituents may be positioned at the 2,3-, 2,4-, 2,5-, 2,6-, 3,4-, 3,5-, 2,3,4-, 2,3,5-, 2,3,6-, 2,4,5-, 2,4,6-, 2,5,6- or 3,4,5-positions. In one embodiment of compounds including a disubstituted phenyl, the substituents are positioned other than 3,4. In another embodiment they are positioned 3,4. In one embodiment of compounds including a trisubstituted phenyl, the substituents are positioned other than 3,4,5 or, alternatively, no two of the substituents are positioned 3,4. In another embodiment, the substituents are positioned 3,4,5.

Specific examples of R⁸ substituents in such di- and trisubstituted phenyls include the various R⁸ substituents described above in connection with the ortho, meta and para substituted phenyls.

In another specific embodiment, R⁸ substituents useful for substitituting such di- and trisubstituted phenyls include (C1-C6) alkyl, (C1-C6) alkoxy, methoxy, halo, chloro, (C1-C6) perhaloalkyl, —CF₃, (C1-C6) perhaloalkoxy and —OCF₃. In a preferred embodiment, such R⁸ substituents are positioned 3,4 or 3,5. Specific examples of preferred di-substituted phenyl rings include 3-chloro4-methoxy-phenyl, 3-methoxy4-chlorophenyl, 3-chloro4-trifluoromethoxy-phenyl, 3-trifluoromethoxy4-chloro-phenyl, 3,4-dichloro-phenyl, 3,4-dimethoxyphenyl and 3,5-dimethoxyphenyl, with the provisos that: (1) when R⁴ is one of the above-identified phenyls, and R⁵ and R⁶ are each hydrogen, then R² is not 3,4,5-tri(C1-C6)alkoxyphenyl or 3,4,5-trimethoxyphenyl; (2) when R² is 3,4-dimethoxyphenyl and R⁵ and R⁶ are each hydrogen, then R4 is not 3-(C1-C6)alkoxyphenyl, 3-methoxyphenyl, 3,4-di-(C1-C6) alkoxyphenyl or 3,4-dimethoxyphenyl; (3) when R⁴ is 3-chloro4-methoxyphenyl and R⁵ is halo or fluoro, and optionally R⁶ is hydrogen, then R² is not 3-chloro-4-(C1-C6)alkoxyphenyl or 3-chloro4-methoxyphenyl; (4) when R⁴ is 3,4-dichlorophenyl, R⁵ is hydrogen, (C1-C6) alkyl, methyl, halo or chloro and optionally R⁶ is hydrogen, then R² is not a phenyl mono substituted at the para position with a (C1-C6) alkoxy group which is optionally substituted with one or more of the same or different R^(b), —OH or —NR^(c)R^(c) groups, where R^(b) and R^(c) are as previously described for structural formula (I); and/or (5) R² and/or R⁴ is not 3,4,5-tri(C1-C6)alkoxyphenyl or 3,4,5-trimethoxyphenyl, especially when R⁵ and R⁶ are each hydrogen.

In another embodiment of compounds including a trisubstituted phenyl, the trisubstituted phenyl has the formula:

wherein: R³¹ is methyl or (C1-C6) alkyl; R³² is hydrogen, methyl or (C1-C6) alkyl; and R³³ is a halo group.

In a thirteenth embodiment of the compounds of structural formulae (I) and (Ia), R² and/or R⁴ is an optionally substituted heteroaryl. Typical heteroaryl groups according to this thirteenth embodiment comprise from 5 to 15, and more typically from 5 to 11 ring atoms, and include one, two, three or four of the same or different heteratoms or heteroatomic groups selected from the group consisting of N, NH, O, S, S(O) and S(O)₂. The optionally substituted heteroaryl may be attached to its respective C2 or C4 nitrogen atom or linker L¹ or L² through any available carbon atom or heteroatom, but is typically attached via a carbon atom. The optional substituents may be the same or different, and may be attached to any available carbon atom or heteroatom. In one embodiment of these compounds, R⁵ is other than bromo, nitro, trifluoromethyl, cyano or —C(O)NHR, where R is hydrogen or (C1-C6) alkyl. In another embodiment of these compounds, when R² and R⁴ are each a substituted or unsubstituted pyrrole or indole, then the ring is attached to the remainder of the molecule via a ring carbon atom. In still another embodiment of compounds including an optionally substituted heteroaryl group, the heteroaryl is unsubstituted or substituted with from one to four of the same or different R⁸ groups, where R⁸ is as previously defined for structural formula (I). Specific examples of such optionally substituted heteroaryls include, but are not limited to, the following heteroaryl groups:

wherein:

-   -   p is an integer from one to three;     -   each         independently represents a single bond or a double bond;     -   R³⁵ is hydrogen or R⁸, where R⁸ is as previously defined for         structural formula (I);     -   X is selected from the group consisting of CH, N and N—O;     -   each Y is independently selected from the group consisting of O,         S and NH;     -   each Y¹ is independently selected from the group consisting of         O, S, SO, SO₂, SONR³⁶, NH and NR³⁷;     -   each Y² is independently selected from the group consisting of         CH, CH₂, O, S, N, NH and NR³⁷;     -   R³⁶ is hydrogen or alkyl;     -   R³⁷ is selected from the group consisting of hydrogen and a         progroup, preferably hydrogen or a progroup selected from the         group consisting of aryl, arylalkyl, heteroaryl, R^(a),         R^(b)—CR^(a)R^(b)—O—C(O)R⁸, —CR^(a)R^(b)—O—PO(OR⁸)₂,         —CH₂—O—PO(OR⁸)₂, —CH₂—PO(OR⁸)₂, —C(O)—CR^(a)R^(b)—N(CH₃)₂,         —CR^(a)R^(b)—O—C(O)—CR^(a)R^(b)—N(CH₃)₂, —C(O)R⁸, —C(O)CF₃ and         —C(O)—NR⁸—C(O)R⁸;     -   A is selected from the group consisting of O, NH and NR³⁸;     -   R³⁸ is selected from the group consisting of alkyl and aryl;     -   R⁹, R¹⁰, R¹¹ and R¹² are each, independently of one another,         selected from the group consisting of alkyl, alkoxy, halogen,         haloalkoxy, aminoalkyl and hydroxyalkyl, or, alternatively,         R⁹and R¹⁰ and/or R¹¹ and R¹² are taken together form a ketal;     -   each Z is selected from the group consisting of hydroxyl,         alkoxy, aryloxy, ester, carbamate and sulfonyl;     -   Q is selected from the group consisting of —OH, OR⁸,         —NR^(c)R^(c), —NHR³⁹—C(O)R⁸, —NHR³⁹—C(O)OR⁸, —NR³⁹—CHR⁴⁰—R^(b),         —NR³⁹—(CH₂)_(m)—R^(b) and —NR³⁹—C(O)—CHR⁴⁰—NR^(c)R^(c);     -   R³⁹ and R⁴⁰ are each, independently of one another, selected         from the group consisting of hydrogen, alkyl, aryl,         alkylaryl;arylalkyl and NHR⁸; and     -   R^(a), R^(b) and R^(c) are as previously defined for structural         formula (I). Preferred R^(b) substitutents for Q are selected         from —C(O)OR⁸, —O—C(O)R⁸, —O—P(O)(OR⁸)₂ and —P(O)(OR⁸)₂.

In one embodiment of the above-depicted heteroaryls, as well as other 5-15 membered heteroaryls according to this embodiment of the invention, each R⁸ is independently selected from the group consisting of R^(d), —NR^(c)R^(c), —(CH₂)_(m)—NR^(c)R^(c), —C(O)NR^(c)R^(c), —(CH₂)_(m)—C(O)NR^(c)R^(c), —C(O)OR^(d), —(CH₂)_(m)—C(O)OR^(d) and —(CH₂)_(m)—OR^(d), where m, R^(c) and R^(d) are as previously defined for structural formula (I).

In a specific embodiment, R^(d) and/or R^(c) is selected from the group consisting of R^(a) and (C3-C8) cycloalkyl optionally substituted with one or more of the same or different hydroxyl, amino or carboxyl groups.

In another embodiment of the above-depicted heteroaryls, each R³⁵ is hydrogen or (C1-C6) ethyl or methyl.

In still another embodiment of the above-depicted heteroaryls, the aromatic ring connectivity is either at the 5 or 6 position. It should be understood that either R² or R⁴ can utilize the heteroaryl groups discussed throughout this specification.

In a fourteenth embodiment of the compounds of structural formulae (I) and (Ia), R² and R⁴ are each, independently of one another, an optionally substituted phenyl, aryl or heteroaryl, with the provisos that: (1) when L¹ is a direct bond and R⁶ and optionally R⁵ is hydrogen, then R² is other than 3,4,5-trimethoxyphenyl or 3,4,5-tri(C1-C6) alkoxyphenyl; (2) when L¹ and L² are each a direct bond, R⁶ is hydrogen and R⁵ is halo, then R² and R⁴ are not each simultaneously 3,4,5-trimethoxyphenyl or 3,4,5-tri(C1-C6) alkoxyphenyl; (3) when R⁴ is 3-methoxyphenyl or 3-(C1-C6) alkoxyphenyl and R² is a 3,4,5-trisubstituted phenyl, the substituents positioned at the 3 and 4 positions are not both simultaneously methoxy or (C1-C6) alkoxy; (4) when R² is a substituted phenyl and R⁶ is hydrogen, then R⁵ is other than cyano or —C(O)NHR, where R is hydrogen or (C1-C6) alkyl; and/or (5) when R² and R⁴ are each independently a substituted or unsubstituted pyrrole or indole, then the pyrrole or indole is attached to the remainder of the molecule via a ring carbon atom. Alternatively, R² is subject to the provisos described in connection with the first or second embodiment.

In this fourteenth embodiment of the invention, the R² and R⁴ substituents may be the same or different. Specific optionally substituted phenyl, aryl and/or heteroaryls include those illustrated above in connection with the twelfth and thirteenth embodiments.

In a fifteenth embodiment of the compounds of structural formulae (I) and (Ia), including the above-described first through fourteenth embodiments thereof, R⁶ is hydrogen and R⁵ is an electronegative group. As will be recognized by skilled artisans, electronegative groups are atoms or groups of atoms that have a relatively great tendency to attract electrons to themselves. Specific examples of electronegative groups according to this fourteenth embodiment include, but are not limited to, —CN, —NC, —NO₂, halo, bromo, chloro, fluoro, (C1-C3) haloalkyl, (C1-C3) perhaloalkyl, (C1-C3) fluoroalkyl, (C1-C3) perfluoroalkyl, —CF₃, (C1-C3) haloalkoxy, (C1-C3) perhaloalkoxy, (C1-C3) fluoroalkoxy, (C1-C3) perfluoroalkoxy, —OCF₃, —C(O)R^(a), —C(O)OR^(a), —C(O)CF₃ and —C(O)OCF₃. In a specific embodiment, the electronegative group is a halogen-containing electronegative group, such as —OCF₃, —CF₃, bromo, chloro or fluoro. In another specific embodiment, R⁵ is fluoro, subject to the proviso that the the compound is not any compound according to the third embodiment.

In a sixteenth embodiment, the compounds of structural formulae (I) and (Ia) are compounds according to structural formula (Ib):

and salts, hydrates, solvates and N-oxides thereof, wherein R¹¹, R¹², R¹³ and R¹⁴ are each, independently of one another, selected from the group consisting of hydrogen, hydroxy, (C1-C6) alkoxy and —NR^(c)R^(c); and R⁵, R⁶ and R^(c) are as previously defined for structural formula (I), with the proviso that when R¹³, R⁵ and R⁶ are each hydrogen, then R¹¹ and R¹² are not simultaneously methoxy, (C1-C6) alkoxy or (C1-C6) haloalkoxy

In a seventeenth embodiment, the compounds of structural formulae (I) and (Ia) are compounds according to structural formula (Ic):

and salts, hydrates, solvates and N-oxides thereof, wherein:

R⁴ is selected from the group consisting of 5-10 membered heteroaryl and 3-hydroxyphenyl;

R⁵ is F or —CF₃; and

R⁸ is —O(CH₂)_(m)—R^(b), where m and R^(b) are as previously defined for structural formula (I). In a specific embodiment, R⁸ is —O—CH₂—C(O)NH-CH₃ and/or R⁴ is a heteroaryl according to the thirteenth embodiment.

In an eighteenth embodiment, the compounds of structural formulae (I) and (Ia) include any compound selected from TABLE 1 that inhibits an Fc receptor signal transduction cascade, a Syk kinase activity, a Syk-kinase dependent receptor signal transduction cascade or cell degranulation as measured in an in vitro assay, optionally subject to the proviso that the compound is not a compound excluded by the above-described third embodiment and/or other embodiments. In a specific embodiment, such compounds have an IC₅₀ of about 20 μM or less as measured in an in vitro degranulation assay, such as one of the degranulation assays described in the Examples section.

In a nineteenth embodiment, the compounds of structural formulae (I) and (Ia) include any compound selected from TABLE 1 that inhibits the FcγR1 or FcεR1 receptor cascade with an IC₅₀ of about 20 μM or less as measured in an in vitro assay, such as one of the in vitro assays provided in the Examples section, optionally subject to the proviso that the compound is not a compound excluded by the above-described third embodiment and/or other embodiments.

Also specifically described are combinations of the above first through nineteenth specific embodiments.

Those of skill in the art will appreciate that the 2,4-pyrimidinediamine compounds described herein may include functional groups that can be masked with progroups to create prodrugs. Such prodrugs are usually, but need not be, pharmacologically inactive until converted into their active drug form. Indeed, many of the active 2,4-pyrimidinediamine compounds described in TABLE 1, infra, include promoieties that are hydrolyzable or otherwise cleavable under conditions of use. For example, ester groups commonly undergo acid-catalyzed hydrolysis to yield the parent carboxylic acid when exposed to the acidic conditions of the stomach, or base-catalyzed hydrolysis when exposed to the basic conditions of the intestine or blood. Thus, when administered to a subject orally, 2,4-pyrimidinediamines that include ester moieties may be considered prodrugs of their corresponding carboxylic acid, regardless of whether the ester form is pharmacologically active. Referring to TABLE 1, numerous ester-containing 2,4-pyrimidinediamines of the invention are active in their ester, “prodrug” form.

In the prodrugs of the invention, any available functional moiety may be masked with a progroup to yield a prodrug. Functional groups within the 2,4-pyrimidinediamine compounds that may be masked with progroups for inclusion in a promoiety include, but are not limited to, amines (primary and secondary), hydroxyls, sulfanyls (thiols), carboxyls, etc. Myriad progroups suitable for masking such functional groups to yield promoieties that are cleavable under the desired conditions of use are known in the art. All of these progroups, alone or in combinations, may be included in the prodrugs of the invention.

In one illustrative embodiment, the prodrugs of the invention are compounds according to structural formula (1) in which R^(c) and R^(d) may be, in addition to their previously-defined alternatives, a progroup.

Replacing the hydrogens attached to N2 and N4 in the 2,4-pyrimidinediamines of structural formula (I) with substituents adversely effects the activity of the compounds. However, as will be appreciated by skilled artisans, these nitrogens may be included in promoieties that, under conditions of use, cleave to yield 2,4-pyrimidinediamines according to structural formula (I). Thus, in another embodiment, the prodrugs of the invention are compounds according to structural formula (II):

including salts, hydrates, solvates and N-oxides thereof, wherein:

R², R⁴, R⁵, R⁶, L¹ and L² are as previously defined for structural formula (I); and

R^(2b) and R^(4b) are each, independently of one another, a progroup. Specific examples of progroups according to this embodiment of the invention include, but are not limited to, (C1-C6) alkyl, —C(O)CH₃, —C(O)NHR³⁶ and —S(O)₂R³⁶, where R³⁶ is (C1-C6) alkyl, (C5-C15) aryl and (C3-C8) cycloalkyl.

In the prodrugs of structural formula (II), the various substituents may be as described for the various first through twentieth embodiments previously described for the compounds of structural formulae (I) and (Ia), or combinations of such embodiments.

Those of skill in the art will appreciate that many of the compounds and prodrugs of the invention, as well as the various compound species specifically described and/or illustrated herein, may exhibit the phenomena of tautomerism, conformational isomerism, geometric isomerism and/or optical isomerism. For example, the compounds and prodrugs of the invention may include one or more chiral centers and/or double bonds and as a consequence may exist as stereoisomers, such as double-bond isomers (i.e., geometric isomers), enantiomers and diasteromers and mixtures thereof, such as racemic mixtures. As another example, the compounds and prodrugs of the invention may exist in several tautomeric forms, including the enol form, the keto form and mixtures thereof. As the various compound names, formulae and compound drawings within the specification and claims can represent only one of the possible tautomeric, conformational isomeric, optical isomeric or geometric isomeric forms, it should be understood that the invention encompasses any tautomeric, conformational isomeric, optical isomeric and/or geometric isomeric forms of the compounds or prodrugs having one or more of the utilities described herein, as well as mixtures of these various different isomeric forms. In cases of limited rotation around the 2,4-pryimidinediamine core structure, atrop isomers are also possible and are also specifically included in the compounds of the invention.

Moreover, skilled artisans will appreciate that when lists of alternative substituents include members which, owing to valency requirements or other reasons, cannot be used to substitute a particular group, the list is intended to be read in context to include those members of the list that are suitable for substituting the particular group. For example, skilled artisans will appreciate that while all of the listed alternatives for R^(b) can be used to substitute an alkyl group, certain of the alternatives, such as ═O, cannot be used to substitute a phenyl group. It is to be understood that only possible combinations of substituent-group pairs are intended.

The compounds and/or prodrugs of the invention may be identified by either their chemical structure or their chemical name. When the chemical structure and the chemical name conflict, the chemical structure is determinative of the identity of the specific compound.

Depending upon the nature of the various substituents, the 2,4-pyrimidinediamine compounds and prodrugs of the invention may be in the form of salts. Such salts include salts suitable for pharmaceutical uses (“pharmaceutically-acceptable salts”), salts suitable for veterinary uses, etc. Such salts may be derived from acids or bases, as is well-known in the art.

In one embodiment, the salt is a pharmaceutically acceptable salt. Generally, pharmaceutically acceptable salts are those salts that retain substantially one or more of the desired pharmacological activities of the parent compound and which are suitable for administration to humans. Pharmaceutically acceptable salts include acid addition salts formed with inorganic acids or organic acids. Inorganic acids suitable for forming pharmaceutically acceptable acid addition salts include, by way of example and not limitation, hydrohalide acids (e.g., hydrochloric acid, hydrobromic acid, hydriodic, etc.), sulfuric acid, nitric acid, phosphoric acid, and the like. Organic acids suitable for forming pharmaceutically acceptable acid addition salts include, by way of example and not limitation, acetic acid, trifluoroacetic acid, propionic acid, hexanoic acid, cyclopentanepropionic acid, glycolic acid, oxalic acid, pyruvic acid, lactic acid, malonic acid, succinic acid, malic acid, maleic acid, fumaric acid, tartaric acid, citric acid, palmitic acid, benzoic acid, 3-(4-hydroxybenzoyl) benzoic acid, cinnamic acid, mandelic acid, alkylsulfonic acids (e.g., methanesulfonic acid, ethanesulfonic acid, 1,2-ethane-disulfonic acid, 2-hydroxyethanesulfonic acid, etc.), arylsulfonic acids (e.g., benzenesulfonic acid, 4-chlorobenzenesulfonic acid, 2-naphthalenesulfonic acid, 4-toluenesulfonic acid, camphorsulfonic acid, etc.), 4-methylbicyclo[2.2.2]-oct-2-ene-1-carboxylic acid, glucoheptonic acid, 3-phenylpropionic acid, trimethylacetic acid, tertiary butylacetic acid, lauryl sulfuric acid, gluconic acid, glutamic acid, hydroxynaphthoic acid, salicylic acid, stearic acid, muconic acid, and the like.

Pharmaceutically acceptable salts also include salts formed when an acidic proton present in the parent compound is either replaced by a metal ion (e.g., an alkali metal ion, an alkaline earth metal ion or an aluminum ion) or coordinates with an organic base (e.g., ethanolamine, diethanolamine, triethanolamine, N-methylglucamine, morpholine, piperidine, dimethylamine, diethylamine, etc.).

The 2,4-pyrimidinediamine compounds and of the invention, as well as the salts thereof, may also be in the form of hydrates, solvates and N-oxides, as are well-known in the art.

6.3 Methods of Synthesis

The compounds and prodrugs of the invention may be synthesized via a variety of different synthetic routes using commercially available starting materials and/or starting materials prepared by conventional synthetic methods. Suitable exemplary methods that may be routinely adapted to synthesize the 2,4-pyrimidinediamine compounds and prodrugs of the invention are found in U.S. Pat. No. 5,958,935, the disclosure of which is incorporated herein by reference. Specific examples describing the synthesis of numerous compounds and prodrugs of the invention, as well as intermediates therefor, are provided in the Examples section. All of the compounds of structural formulae (I), (Ia) and (II) may be prepared by routine adaptation of these methods.

A variety of exemplary synthetic routes that can be used to synthesize the 2,4-pyrimidinediamine compounds of the invention are described in Schemes (I)-(XI), below. In Schemes (I)-(XI), like-numbered compounds have similar structures. These methods may be routinely adapted to synthesize the prodrugs according to structural formula (II).

In one exemplary embodiment, the compounds can be synthesized from substituted or unsubstituted uracils or thiouracils as illustrated in Scheme (I), below:

In Scheme (I), R², R⁴, R⁵, R⁶, L¹ and L² are as previously defined for structural formula (I), X is a halogen (e.g., F, Cl, Br or I) and Y and Y′ are each, independently of one another, selected from the group consisting of O and S. Referring to Scheme (I), uracil or thiouracil 2 is dihalogenated at the 2- and 4-positions using standard halogenating agent POX₃ (or other standard halogenating agent) under standard conditions to yield 2,4-bishalo pyrimidine 4. Depending upon the R⁵ substituent, in pyrimidine 4, the halide at the C4 position is more reactive towards nucleophiles than the halide at the C2 position. This differential reactivity can be exploited to synthesize 2,4-pyrimidinediamines according structural formula (I) by first reacting 2,4-bishalopyrimidine 4 with one equivalent of amine 10, yielding 4N-substituted-2-halo4-pyrimidineamine 8, followed by amine 6 to yield a 2,4-pyrimidinediamine according structural formula (I). 2N,4N-bis(substituted)-2,4-pyrimidinediamines 12 and 14 can be obtained by reacting 2,4-bishalopyrimidine 4 with excess 6 or 10, respectively.

In most situations, the C4 halide is more reactive towards nucleophiles, as illustrated in the Scheme. However, as will be recognized by skilled artisans, the identity of the R⁵ substituent may alter this reactivity. For example, when R⁵ is trifluoromethyl, a 50:50 mixture of 4N-substituted-4-pyrimidineamine 8 and the corresponding 2N-substituted-2-pyrimidineamine is obtained. Regardless of the identity of the R⁵ substituent, the regioselectivity of the reaction can be controlled by adjusting the solvent and other synthetic conditions (such as temperature), as is well-known in the art.

The reactions depicted in Scheme (I) may proceed more quickly when the reaction mixtures are heated via microwave. When heating in this fashion, the following conditions may be used: heat to 175° C. in ethanol for 5-20 min. in a Smith Reactor (Personal Chemistry) in a sealed tube (at 20 bar pressure).

The uracil or thiouracil 2 starting materials may be purchased from commercial sources or prepared using standard techniques of organic chemistry. Commercially available uracils and thiouracils that can be used as starting materials in Scheme (I) include, by way of example and not limitation, uracil (Aldrich #13,078-8; CAS Registry 66-22-8); 2-thio-uracil (Aldrich #11,558-4; CAS Registry 141-90-2); 2,4-dithiouracil (Aldrich #15,846-1; CAS Registry 2001-93-6); 5-acetouracil (Chem. Sources Int'l 2000; CAS Registry 6214-65-9); 5-azidouracil; 5-aminouracil (Aldrich #85,528-6; CAS Registry 932-52-5); 5-bromouracil (Aldrich #85,247-3; CAS Registry 51-20-7); 5-(trans-2-bromovinyl)-uracil (Aldrich #45,744-2; CAS Registry 69304-49-0); 5-(trans-2-chlorovinyl)-uracil (CAS Registry 81751-48-2); 5-(trans-2-carboxyvinyl)-uracil; uracil-5-carboxylic acid (2,4-dihydroxypyrimidine-5-carboxylic acid hydrate; Aldrich #27,770-3; CAS Registry 23945-44-0); 5-chlorouracil (Aldrich #22,458-8; CAS Registry 1820-81-1); 5-cyanouracil (Chem. Sources Int'l 2000; CAS Registry 4425-56-3); 5-ethyluracil (Aldrich #23,044-8; CAS Registry 4212-49-1); 5-ethenyluracil (CAS Registry 37107-81-6); 5-fluorouracil (Aldrich #85,847-1; CAS Registry 51-21-8); 5-iodouracil (Aldrich #85,785-8; CAS Registry 696-07-1); 5-methyluracil (thymine; Aldrich #13,199-7; CAS Registry 65-714); 5-nitrouracil (Aldrich #85,276-7; CAS Registry 611-08-5); uracil-5-sulfamic acid (Chem. Sources Int'l 2000; CAS Registry 5435-16-5); 5-(trifluoromethyl)-uracil (Aldrich #22,327-1; CAS Registry 54-20-6); 5-(2,2,2-trifluoroethyl)-uracil (CAS Registry 155143-31-6); 5-(pentafluoroethyl)-uracil (CAS Registry 60007-38-3); 6-aminouracil (Aldrich #A5060-6; CAS Registry 873-83-6) uracil-6-carboxylic acid (orotic acid; Aldrich #0-840-2; CAS Registry 50887-69-9); 6-methyluracil (Aldrich #D11,520-7; CAS Registry 62648-2); uracil-5-amino-6-carboxylic acid (5-aminoorotic acid; Aldrich #19,121-3; CAS Registry #7164-43-4); 6-amino-5-nitrosouracil (6-amino-2,4-dihydroxy-5-nitrosopyrimidine; Aldrich #27,689-8; CAS Registry 5442-24-0); uracil-5-fluoro-6-carboxylic acid (5-fluoroorotic acid; Aldrich #42,513-3; CAS Registry 00000-00-0); and uracil-5-nitro-6-carboxylic acid (5-nitroorotic acid; Aldrich #18,528-0; CAS Registry 600779-49-9). Additional 5-, 6- and 5,6-substituted uracils and/or thiouracils are available from General Intermediates of Canada, Inc., Edmonton, CA (www.generalintermediates.com) and/or Interchim, Cedex, France (www.interchim.com), or may be prepared using standard techniques. Myriad textbook references teaching suitable synthetic methods are provided infra.

Amines 6 and 10 may be purchased from commercial sources or, alternatively, may be synthesized utilizing standard techniques. For example, suitable amines may be synthesized from nitro precursors using standard chemistry. Specific exemplary reactions are provided in the Examples section. See also Vogel, 1989, Practical Organic Chemistry, Addison Wesley Longman, Ltd. and John Wiley & Sons, Inc.

Skilled artisans will recognize that in some instances, amines 6 and 10 and/or substituents R⁵ and/or R⁶ on uracil or thiouracil 2 may include functional groups that require protection during synthesis. The exact identity of any protecting group(s) used will depend upon the identity of the functional group being protected, and will be apparent to these of skill in the art. Guidance for selecting appropriate protecting groups, as well as synthetic strategies for their attachment and removal, may be found, for example, in Greene & Wuts, Protective Groups in Organic Synthesis, 3d Edition, John Wiley & Sons, Inc., New York (1999) and the references cited therein (hereinafter “Greene & Wuts”).

A specific embodiment of Scheme (I) utilizing 5-fluorouracil (Aldrich #32,937-1) as a starting material is illustrated in Scheme (Ia), below:

In Scheme (Ia), R², R⁴, L¹ and L² are as previously defined for Scheme (I). According to Scheme (Ia), 5-fluorouracil 3 is halogenated with POCl₃ to yield 2,4-dichloro-5-fluoropyrimidine 5, which is then reacted with excess amine 6 or 10 to yield N2,N4-bis substituted 5-fluoro-2,4-pyrimidinediamine 11 or 13, respectively. Alternatively, asymmetric 2N,4N-disubstituted-5-fluoro-2,4-pyrimidinediamine 9 may be obtained by reacting 2,4-dichloro-5-fluoropyrimidine 5 with one equivalent of amine 10 (to yield 2-chloro-N4-substituted-5-fluoro-4-pyrimidineamine 7) followed by one or more equivalents of amine 6.

In another exemplary embodiment, the 2,4-pyrimidinediamine compounds of the invention may be synthesized from substituted or unsubstituted cytosines as illustrated in Schemes (IIa) and (IIb), below:

In Schemes (IIa) and (IIb), R², R⁴, R⁵, R⁶, L¹, L² and X are as previously defined for Scheme (I) and PG represents a protecting group. Referring to Scheme (IIa), the C4 exocyclic amine of cytosine 20 is first protected with a suitable protecting group PG to yield N4-protected cytosine 22. For specific guidance regarding protecting groups useful in this context, see Vorbruggen and Ruh-Pohlenz, 2001, Handbook of Nucleoside Synthesis, John Wiley & Sons, NY, pp. 1-631 (“Vorbrüggen”). Protected cytosine 22 is halogenated at the C2 position using a standard halogenation reagent under standard conditions to yield 2-chloro4N-protected4-pyrimidineamine 24. Reaction with amine 6 followed by deprotection of the C4 exocyclic amine and reaction with amine 10 yields a 2,4-pyrimidinediamine according to structural formula (1).

Alternatively, referring to Scheme (IIb), cytosine 20 may be reacted with amine 10 or protected amine 21 to yield N4-substituted cytosine 23 or 27, respectively. These substituted cytosines may then be halogenated as previously described, deprotected (in the case of N4-substituted cytosine 27) and reacted with amine 6 to yield a 2,4-pyrimidinediamine according to structural formula (I).

Commercially-available cytosines that may be used as starting materials in Schemes (IIa) and (IIb) include, but are not limited to, cytosine (Aldrich #14,201-8; CAS Registry 71-30-7); N⁴-acetylcytosine (Aldrich #37,791-0; CAS Registry 14631-20-0); 5-fluorocytosine (Aldrich #27,159-4; CAS Registry 2022-85-7); and 5-(trifluoromethyl)-cytosine. Other suitable cytosines useful as starting materials in Schemes (IIa) are available from General Intermediates of Canada, Inc., Edmonton, CA (www.generalintermediates.com) and/or Interchim, Cedex, France (www.interchim.com), or may be prepared using standard techniques. Myriad textbook references teaching suitable synthetic methods are provided infra.

In still another exemplary embodiment, the 2,4-pyrimidinediamine compounds of the invention may be synthesized from substituted or unsubstituted 2-amino4-pyrimidinols as illustrated in Scheme (III), below:

In Scheme (III), R², R⁴, R⁵, R⁶, L¹, L² and X are as previously defined for Scheme (I) and Z is a leaving group as discussed in more detail in connection with Scheme IV, infra. Referring to Scheme (III), 2-amino-4-pyrimidinol 30 is reacted with amine 6 (or optionally protected amine 21) to yield N2-substituted4-pyrimidinol 32, which is then halogenated as previously described to yield N2-substituted4-halo-2-pyrimidineamine 34. Optional deprotection (for example if protected amine 21 was used in the first step) followed by reaction with amine 10 affords a 2,4-pyrimidinediamine according to structural formula (I). Alternatively, pyrimidinol 30 can be reacted with acylating agent 31.

Suitable commercially-available 2-amino4-pyrimidinols 30 that can be used as starting materials in Scheme (III) include, but are not limited to, 2-amino-6-chloro-4-pyrimidinol hydrate (Aldrich #A4702-8; CAS Registry 00000-00-0) and 2-amino-6-hydroxy4-pyrimidinol (Aldrich #A5040-1; CAS Registry 56-09-7). Other 2-amino-4-pyrimidinols 30 useful as starting materials in Scheme (III) are available from General Intermediates of Canada, Inc., Edmonton, CA (www.generalintermediates.com) and/or Interchim, Cedex, France (www.interchim.com), or may be prepared using standard techniques. Myriad textbook references teaching suitable synthetic methods are provided infra.

Alternatively, the 2,4-pyrimidinediamine compounds of the invention may be prepared from substituted or unsubstituted 4-amino-2-pyrimidinols as illustrated in Scheme (IV), below:

In Scheme (IV), R², R⁴, R⁵, R⁶, L¹ and L² are as previously defined for Scheme (I) and Z represents a leaving group. Referring to Scheme (IV), the C2-hydroxyl of 4-amino-2-pyrimidinol 40 is more reactive towards nucleophiles than the C4-amino such that reaction with amine 6 yields N2-substituted-2,4-pyrimidinediamine 42. Subsequent reaction with compound 44, which includes a good leaving group Z, or amine 10 yields a 2,4-pyrimidinediamine according to structural formula (I). Compound 44 may include virtually any leaving group that can be displaced by the C4-amino of N2-substituted-2,4-pyrimidinediamine 42. Suitable leaving groups Z include, but are not limited to, halogens, methanesulfonyloxy (mesyloxy; “OMs”), trifluoromethanesulfonyloxy (“OTf”) and p-toluenesulfonyloxy (tosyloxy; “OTs”), benzene sulfonyloxy (“besylate”) and metanitro benzene sulfonyloxy (“nosylate”). Other suitable leaving groups will be apparent to those of skill in the art.

Substituted 4-amino-2-pyrimidinol starting materials may be obtained commercially or synthesized using standard techniques. Myriad textbook references teaching suitable synthetic methods are provided infra.

In still another exemplary embodiment, the 2,4-pyrimidinediamine compounds of the invention can be prepared from 2-chloro-4-aminopyrimidines or 2-amino-4-chloropyrimidines as illustrated in Scheme (V), below:

In Scheme (V), R², R⁴, R⁵, R⁶, L¹, L² and X are as defined for Scheme (I) and Z is as defined for Scheme (IV). Referring to Scheme (V), 2-amino4-chloropyrimidine 50 is reacted with amino 10 to yield 4N-substituted-2-pyrimidineamine 52 which, following reaction with compound 31 or amine 6, yields a 2,4-pyrimidinediamine according to structural formula (I). Alternatively, 2-chloro-4-amino-pyrimidine 54 may be reacted with compound 44 followed by amine 6 to yield a compound according to structural formula (I).

A variety of pyrimidines 50 and 54 suitable for use as starting materials in Scheme (V) are commercially available, including by way of example and not limitation, 2-amino-4,6-dichloropyrimidine (Aldrich #A4860-1; CAS Registry 56-05-3); 2-amino-4-chloro-6-methoxy-pyrimidine (Aldrich #51,864-6; CAS Registry 5734-64-5); 2-amino-4-chloro-6-methylpyrimidine (Aldrich #12,288-2; CAS Registry 5600-21-5); and 2-amino4-chloro-6-methylthiopyrimidine (Aldrich #A4600-5; CAS Registry 1005-38-5). Additional pyrimidine starting materials are available from General Intermediates of Canada, Inc., Edmonton, CA (www.generalintermediates.com) and/or Interchim, Cedex, France (www.interchim.com), or may be prepared using standard techniques. Myriad textbook references teaching suitable synthetic methods are provided infra.

Alternatively, 4-chloro-2-pyrimidineamines 50 may be prepared as illustrated in Scheme (Va):

In Scheme (Va), R⁵ and R⁶ are as previously defined for structural formula (I). In Scheme (Va), dicarbonyl 53 is reacted with guanidine to yield 2-pyrimidineamine 51. Reaction with peracids like m-chloroperbenzoic acid, trifluoroperacetic acid or urea hydrogen peroxide complex yields N-oxide 55, which is then halogenated to give 4-chloro-2-pyrimidineamine 50. The corresponding 4-halo-2-pyrimidineamines may be obtained by using suitable halogenation reagents.

In yet another exemplary embodiment, the 2,4-pyrimidinediamine compounds of the invention can be prepared from substituted or unsubstituted uridines as illustrated in Scheme (VI), below:

In Scheme (VI), R², R⁴, R⁵, R⁶, L¹, L² and X are as previously defined for Scheme (I) and the superscript PG represents a protecting group, as discussed in connection with Scheme (IIb). According to Scheme (VI), uridine 60 has a C4 reactive center such that reaction with amine 10 or protected amine 21 yields N4-substituted cytidine 62 or 64, respectively. Acid-catalyzed deprotection of N4-substituted 62 or 64 (when “PG” represents an acid-labile protecting group) yields N4-substituted cytosine 28, which may be subsequently halogenated at the C2-position and reacted with amine 6 to yield a 2,4-pyrimidinediamine according to structural formula (I).

Cytidines may also be used as starting materials in an analogous manner, as illustrated in Scheme (VII), below:

In Scheme (VII), R², R⁴, R⁵, R⁶, L¹, L² and X are as previously defined in Scheme (I) and the superscript PG represents a protecting group as discussed above. Referring to Scheme (VII), like uridine 60, cytidine 70 has a C4 reactive center such that reaction with amine 10 or protected amine 21 yields N4-substituted cytidine 62 or 64, respectively. These cytidines 62 and 64 are then treated as previously described for Scheme (VI) to yield a 2,4-pyrimidinediamine according to structural formula (I).

Although Schemes (VI) and (VII) are exemplified with ribosylnucleosides, skilled artisans will appreciate that the corresponding 2′-deoxyribo and 2′,3′-dideoxyribo nucleosides, as well as nucleosides including sugars or sugar analogs other than ribose, would also work.

Numerous uridines and cytidines useful as starting materials in Schemes (VI) and (VII) are known in the art, and include, by way of example and not limitation, 5-trifluoromethyl-2′-deoxycytidine (Chem. Sources #ABCR F07669; CAS Registry 66,384-66-5); 5-bromouridine (Chem. Sources Int'l 2000; CAS Registry 957-75-5); 5-iodo-2′-deoxyuridine (Aldrich #1-775-6; CAS Registry 5442-2); 5-fluorouridine (Aldrich #32,937-1; CAS Registry 316-46-1); 5-iodouridine (Aldrich #85,259-7; CAS Registry 1024-99-3); 5-(trifluoromethyl)uridine (Chem. Sources Int'l 2000; CAS Registry 70-00-8); 5-trifluoromethyl-2′-deoxyuridine (Chem. Sources Int'l 2000; CAS Registry 70-00-8). Additional uridines and cytidines that can be used as starting materials in Schemes (VI) and (VII) are available from General Intermediates of Canada, Inc., Edmonton, CA (www.generalintermediates.com) and/or Interchim, Cedex, France (www.interchim.com), or may be prepared using standard techniques. Myriad textbook references teaching suitable synthetic methods are provided infra.

The 2,4-pyrimidinediamine compounds of the invention can also be synthesized from substituted pyrimidines, such as chloro-substituted pyrimidines, as illustrated in Schemes (VII) and (IX), below:

In Schemes (VIII) and (IX), R², R⁴, L¹, L² and R^(a) are as previously defined for structural formula (I) and “Ar” represents an aryl group. Referring to Scheme (VIII), reaction of 2,4,6-trichloropyrimidine 80 (Aldrich #T5,620-0; CAS#3764-01-0) with amine 6 yields a mixture of three compounds: substituted pyrimidine mono-, di- and triamines 81, 82 and 83, which can be separated and isolated using HPLC or other conventional techniques. Mono- and diamines 81 and 82 may be further reacted with amines 6 and/or 10 to yield N2,N4,N6-trisubstituted-2,4,6-pyrimidinetriamines 84 and 85, respectively.

N2,N4-bis-substituted-2,4-pyrimidinediamines can be prepared in a manner analogous to Scheme (VIII) by employing 2,4-dichloro-5-methylpyrimidine or 2,4-dichloro-pyrimidine as starting materials. In this instance, the mono-substituted pyrimidineamine corresponding to compound 81 is not obtained. Instead, the reaction proceeds to yield the N2,N4-bis-substituted-2,4-pyrimidinediamine directly.

Referring to Scheme (IX), 2,4,5,6-tetrachloropyrimidine 90 (Aldrich #24,671-9; CAS#1780-40-1) is reacted with excess amine 6 to yield a mixture of three compounds: 91, 92, and 93, which can be separated and isolated using HPLC or other conventional techniques. As illustrated, N2,N4-bis-substituted-5,6,-dichloro-2,4-pyrimidinediamine 92 may be further reacted at the C6 halide with, for example a nucleophilic agent 94 to yield compound 95. Alternatively, compound 92 can be converted into N2,N4-bis-substituted-5-chloro-6-aryl-2,4-pyrimidinediamine 97 via a Suzuki reaction. 2,4-Pyrimidinediamine 95 may be converted to 2,4-pyrimidinediamine 99 by reaction with Bn₃SnH.

As will be recognized by skilled artisans, 2,4-pyrimidinediamines according to the invention, synthesized via the exemplary methods described above or by other well-known means, may also be utilized as starting materials and/or intermediates to synthesize additional 2,4-pyrimidinediamine compounds of the invention. A specific example is illustrated in Scheme (X), below:

In Scheme (X), R⁴, R⁵, R⁶, L² and R^(a) are as previously defined for structural formula (I). Each R^(a′) is independently an R^(a), and may be the same or different from the illustrated R^(a). Referring to Scheme (X), carboxylic acid or ester 100 may be converted to amide 104 by reaction with amine 102. In amine 102, R^(a′) may be the same or different than R^(a) of acid or ester 100. Similarly, carbonate ester 106 may be converted to carbamate 108.

A second specific example is illustrated in Scheme (XI), below:

In Scheme (XI), R⁴, R⁵, R⁶, L² and R^(c) are as previously defined for structural formula (I). Referring to Scheme (XI), amide 110 or 116 may be converted to amine 114 or 118, respectively, by borane reduction with borane methylsulfide complex 112. Other suitable reactions for synthesizing 2,4-pyrimidinediamine compounds from 2,4-pyrimidinediamine starting materials will be apparent to those of skill in the art.

Although many of the synthetic schemes discussed above do not illustrate the use of protecting groups, skilled artisans will recognize that in some instances substituents R², R⁴, R⁵, R⁶, L¹ and/or L² may include functional groups requiring protection. The exact identity of the protecting group used will depend upon, among other things, the identity of the functional group being protected and the reaction conditions used in the particular synthetic scheme, and will be apparent to those of skill in the art. Guidance for selecting protecting groups and chemistries for their attachment and removal suitable for a particular application can be found, for example, in Greene & Wuts, supra.

Prodrugs according to structural formula (II) may be prepared by routine modification of the above-described methods. Alternatively, such prodrugs may be prepared by reacting a suitably protected 2,4-pyrimidinediamine of structural formula (I) with a suitable progroup. Conditions for carrying out such reactions and for deprotecting the product to yield a prodrug of formula (II) are well-known.

Myriad references teaching methods useful for synthesizing pyrimidines generally, as well as starting materials described in Schemes (I)-(IX), are known in the art. For specific guidance, the reader is referred to Brown, D. J., “The Pyrimidines”, in The Chemistry of Heterocyclic Compounds, Volume 16 (Weissberger, A., Ed.), 1962, Interscience Publishers, (A Division of John Wiley & Sons), New York (“Brown I”); Brown, D. J., “The Pyrimidines”, in The Chemistry of Heterocyclic Compounds, Volume 16, Supplement I (Weissberger, A. and Taylor, E. C., Ed.), 1970, Wiley-Interscience, (A Division of John Wiley & Sons), New York (Brown II”); Brown, D. J., “The Pyrimidines”, in The Chemistry of Heterocyclic Compounds, Volume 16, Supplement II (Weissberger, A. and Taylor, E. C., Ed.), 1985, An Interscience Publication (John Wiley & Sons), New York (“Brown III”); Brown, D. J., “The Pyrimidines” in The Chemistry of Heterocyclic Compounds, Volume 52 (Weissberger, A. and Taylor, E. C., Ed.), 1994, John Wiley & Sons, Inc., New York, pp. 1-1509 (Brown IV”); Kenner, G. W. and Todd, A., in Heterocyclic Compounds, Volume 6, (Elderfield, R. C., Ed.), 1957, John Wiley, New York, Chapter 7 (pyrimidines); Paquette, L. A., Principles of Modern Heterocyclic Chemistry, 1968, W. A. Benjamin, Inc., New York, pp. 1-401 (uracil synthesis pp. 313, 315; pyrimidine synthesis pp. 313-316; amino pyrimidine synthesis pp. 315); Joule, J. A., Mills, K. and Smith, G. F., Heterocyclic Chemistry, 3^(rd) Edition, 1995, Chapman and Hall, London, UK, pp. 1-516; Vorbrüggen, H. and Ruh-Pohlenz, C., Handbook of Nucleoside Synthesis, John Wiley & Sons, New York, 2001, pp. 1-631 (protection of pyrimidines by acylation pp. 90-91; silylation of pyrimidines pp. 91-93); Joule, J. A., Mills, K. and Smith, G. F., Heterocyclic Chemistry, 4^(th) Edition, 2000, Blackwell Science, Ltd, Oxford, UK, pp. 1-589; and Comprehensive Organic Synthesis, Volumes 1-9 (Trost, B. M. and Fleming, I., Ed.), 1991, Pergamon Press, Oxford, UK.

6.4 Inhibition of Fc Receptor Signal Cascades

Active 2,4-pyrimidinediamine compounds of the invention inhibit Fc receptor signalling cascades that lead to, among other things, degranulation of cells. As a specific example, the compounds inhibit the FcεRI and/or FcγRI signal cascades that lead to degranulation of immune cells such as neutrophil, eosinophil, mast and/or basophil cells. Both mast and basophil cells play a central role in allergen-induced disorders, including, for example, allergic rhinitis and asthma. Referring to FIG. 1, upon exposure allergens, which may be, among other things, pollen or parasites, allergen-specific IgE antibodies are synthesized by B-cells activated by IL-4 (or IL-13) and other messengers to switch to IgE class specific antibody synthesis. These allergen-specific IgEs bind to the high affinity FcεRI. Upon binding of antigen, the FcεR1-bound IgEs are cross-linked and the IgE receptor signal transduction pathway is activated, which leads to degranulation of the cells and consequent release and/or synthesis of a host of chemical mediators, including histamine, proteases (e.g., tryptase and chymase), lipid mediators such as leukotrienes (e.g., LTC4), platelet-activating factor (PAF) and prostaglandins (e.g., PGD2) and a series of cytokines, including TNF-α, IL-4, IL-13, IL-5, IL-6, IL-8, GMCSF, VEGF and TGF-β. The release and/or synthesis of these mediators from mast and/or basophil cells accounts for the early and late stage responses induced by allergens, and is directly linked to downstream events that lead to a sustained inflammatory state.

The molecular events in the FcεRI signal transduction pathway that lead to release of preformed mediators via degranulation and release and/or synthesis of other chemical mediators are well-known and are illustrated in FIG. 2. Referring to FIG. 2, the FcεRI is a heterotetrameric receptor composed of an IgE-binding alpha-subunit, a beta subunit, and two gamma subunits (gamma homodimer). Cross-linking of FcεRI-bound IgE by multivalent binding agents (including, for example IgE-specific allergens or anti-IgE antibodies or fragments) induces the rapid association and activation of the Src-related kinase Lyn. Lyn phosphorylates immunoreceptor tyrosine-based activation motifs (ITAMS) on the intracellular beta and gamma subunits, which leads to the recruitment of additional Lyn to the beta subunit and Syk kinase to the gamma homodimer. These receptor-associated kinases, which are activated by intra- and intermolecular phosphorylation, phosphorylate other components of the pathway, such as the Btk kinase, LAT, and phospholipase C-gamma PLC-gamma). Activated PLC-gamma initiates pathways that lead to protein kinase C activation and Ca²⁺ mobilization, both of which are required for degranulation. FcεR1 cross-linking also activates the three major classes of mitogen activated protein (MAP) kinases, i.e. ERK1/2, JNK1/2, and p38. Activation of these pathways is important in the transcriptional regulation of proinflammatory mediators, such as TNF-α and IL-6, as well as the lipid mediator leukotriene CA (LTC4).

Although not illustrated, the FcγRI signaling cascade is believed to share some common elements with the FcεRI signaling cascade. Importantly, like FcεRI, the FcγRI includes a gamma homodimer that is phosphorylated and recruits Syk, and like FcεRI, activation of the FcγRI signaling cascade leads to, among other things, degranulation. Other Fc receptors that share the gamma homodimer, and which can be regulated by the active 2,4-pyrimidinediamine compounds include, but are not limited to, FcαRI and FcγRIII.

The ability of the 2,4-pyrimidinediamine compounds of the invention to inhibit Fc receptor signaling cascades may be simply determined or confirmed in in vitro assays. Suitable assays for confirming inhition of FcεRI-mediated degranulation are provided in the Examples section. In one typical assay, cells capable of undergoing FcεRI-mediated degranulation, such as mast or basophil cells, are first grown in the presence of IL-4, Stem Cell Factor (SCF), IL-6 and IgE to increase expression of the FcεRI, exposed to a 2,4-pyrimidinediamine test compound of the invention and stimulated with anti-IgE antibodies (or, alternatively, an IgE-specific allergen). Following incubation, the amount of a chemical mediator or other chemical agent released and/or synthesized as a consequence of activating the FcεRI signaling cascade may be quantified using standard techniques and compared to the amount of the mediator or agent released from control cells (i.e., cells that are stimulated but that are not exposed to test compound). The concentration of test compound that yields a 50% reduction in the quantity of the mediator or agent measured as compared to control cells is the IC₅₀ of the test compound. The origin of the mast or basophil cells used in the assay will depend, in part, on the desired use for the compounds and will be apparent to those of skill in the art. For example, if the compounds will be used to treat or prevent a particular disease in humans, a convenient source of mast or basophil cells is a human or other animal which constitutes an accepted or known clinical model for the particular disease. Thus, depending upon the particular application, the mast or basophil cells may be derived from a wide variety of animal sources, ranging from, for example, lower mammals such as mice and rats, to dogs, sheep and other mammals commonly employed in clinical testing, to higher mammals such as monkeys, chimpanzees and apes, to humans. Specific examples of cells suitable for carrying out the in vitro assays include, but are not limited to, rodent or human basophil cells, rat basophil leukemia cell lines, primary mouse mast cells (such as bone marrow-derived mouse mast cells “BMMC”) and primary human mast cells isolated from cord blood (“CHMC”) or other tissues such as lung. Methods for isolating and culturing these cell types are well-known or are provided in the Examples section (see, e.g., Demo et al., 1999, Cytometry 36(4):340-348 and copending application Ser. No. 10/053,355, filed Nov. 8, 2001, the disclosures of which are incorporated herein by reference). Of course, other types of immune cells that degranulate upon activation of the FcεRI signaling cascade may also be used, including, for example, eosinophils.

As will be recognized by skilled artisans, the mediator or agent quantified is not critical. The only requirement is that it be a mediator or agent released and/or synthesized as a consequence of initiating or activating the Fc receptor signaling cascade. For example, referring to FIG. 1, activation of the FcεRI signaling cascade in mast and/or basophil cells leads to numerous downstream events. For example, activation of the FcεRI signal cascade leads to the immediate release (i.e., within 1-3 min. following receptor activation) of a variety of preformed chemical mediators and agents via degranulation. Thus, in one embodiment, the mediator or agent quantified may be specific to granules (i.e., present in granules but not in the cell cytoplasm generally). Examples of granule-specific mediators or agents that can be quantified to determine and/or confirm the activity of a 2,4-pyrimidinediamine compound of the invention include, but are not limited to, granule-specific enzymes such as hexosaminidase and tryptase and granule-specific components such as histamine and serotonin. Assays for quantifying such factors are well-known, and in many instances are commercially available. For example, tryptase and/or hexosaminidase release may be quantified by incubating the cells with cleavable substrates that fluoresce upon cleavage and quantifying the amount of fluorescence produced using conventional techniques. Such cleavable fluorogenic substrates are commercially available. For example, the fluorogenic substrates Z-Gly-Pro-Arg-AMC (Z=benzyloxycarbonyl; AMC=7-amino-4-methylcoumarin; BIOMOL Research Laboratories, Inc., Plymouth Meeting, Pa. 19462, Catalog No. P-142) and Z-Ala-Lys-Arg-AMC (Enzyme Systems Products, a division of ICN Biomedicals, Inc., Livermore, Calif. 94550, Catalog No. AMC-246) can be used to quantify the amount of tryptase released. The fluorogenic substrate 4-methylumbelliferyl-N-acetyl-β-D-glucosaminide (Sigma, St. Louis, Mo., Catalog #69585) can be used to quantify the amount of hexosaminidase released. Histamine release may be quantified using a commercially available enzyme-linked immunosorbent assay (ELISA) such as Immunotech histamine ELISA assay #IM2015 (Beckman-Coulter, Inc.). Specific methods of quantifying the release of tryptase, hexosaminidase and histamine are provided in the Examples section. Any of these assays may be used to determine or confirm the activity of the 2,4-pyrimidinediamine compounds of the invention.

Referring again to FIG. 1, degranulation is only one of several responses initiated by the FcεRI signaling cascade. In addition, activation of this signaling pathway leads to the de novo synthesis and release of cytokines and chemokines such as IL-4, IL-5, IL-6, TNF-α, IL-13 and MIP1-α), and release of lipid mediators such as leukotrienes (e.g., LTC4), platelet activating factor (PAF) and prostaglandins. Accordingly, the 2,4-pyrimidinediamine compounds of the invention may also be assessed for activity by quantifying the amount of one or more of these mediators released and/or synthesized by activated cells.

Unlike the granule-specific components discussed above, these “late stage” mediators are not released immediately following activation of the FcεRI signaling cascade. Accordingly, when quantifying these late stage mediators, care should be taken to insure that the activated cell culture is incubated for a time sufficient to result in the synthesis (if necessary) and release of the mediator being quantified. Generally, PAF and lipid mediators such as leukotriene C4 are released 3-30 min. following FcεRI activation. The cytokines and other late stage mediators are released approx. 4-8 hrs. following FcεRI activation. Incubation times suitable for a specific mediator will be apparent to those of skill in the art. Specific guidance and assays are provided in the Examples section.

The amount of a particular late stage mediator released may be quantified using any standard technique. In one embodiment, the amount(s) may be quantified using ELISA assays. ELISA assay kits suitable for quantifying the amount of TNFα, IL-4, IL-5, IL-6 and/or IL-13 released are available from, for example, Biosource International, Inc., Camarillo, Calif. 93012 (see, e.g., Catalog Nos. KHC3011, KHC0042, KHC0052, KHC0061 and KHC0132). ELISA assay kits suitable for quantifying the amount of leukotriene C4 (LTC4) released from cells are available from Cayman Chemical Co., Ann Arbor, Mich. 48108 (see, e.g., Catalog No. 520211).

Typically, active 2,4-pyrimidinediamine compounds of the invention will exhibit IC₅₀s with respect to FcεRI-mediated degranulation and/or mediator release or synthesis of about 20 μM or lower, as measured in an in vitro assay, such as one of the in vitro assays described above or in the Examples section. Of course, skilled artisans will appreciate that compounds which exhibit lower IC₅₀s, for example on the order of 10 μM, 1 μM, 100 nM, 10 nM, 1 nM, or even lower, are particularly useful.

Skilled artisans will also appreciate that the various mediators discussed above may induce different adverse effects or exhibit different potencies with respect to the same adverse effect. For example, the lipid mediator LTC4 is a potent vasoconstrictor—it is approximately 1000-fold more potent at inducing vasoconstriction than histamine. As another example, in addition to mediating atopic or Type I hypersensitivity reactions, cytokines can also cause tissue remodeling and cell proliferation. Thus, although compounds that inhibit release and/or synthesis of any one of the previously discussed chemical mediators are useful, skilled artisans will appreciate that compounds which inhibit the release and/or synthesis of a plurality, or even all, of the previously described mediators find particular use, as such compounds are useful for ameliorating or avoiding altogether a plurality, or even all, of the adverse effects induced by the particular mediators. For example, compounds which inhibit the release of all three types of mediators-granule-specific, lipid and cytokine—are useful for treating or preventing immediate Type I hypersensitivity reactions as well as the chronic symptoms associated therewith.

Compounds of the invention capable of inhibiting the release of more than one type of mediator (e.g., granule-specific or late stage) may be identified by determining the IC₅₀ with respect to a mediator representative of each class using the various in vitro assays described above (or other equivalent in vitro assays). Compounds of the invention which are capable of inhibiting the release of more than one mediator type will typically exhibit an IC₅₀ for each mediator type tested of less than about 20 μM. For example, a compound which exhibits an IC₅₀ of 1 μM with respect to histamine release (IC₅₀ ^(histamine)) and an IC₅₀ of 1 nM with respect to leukotriene LTC4 synthesis and/or release (IC₅₀ ^(LTC4)) inhibits both immediate (granule-specific) and late stage mediator release. As another specific example, a compound that exhibits an IC₅₀ ^(tryptase) of 10 μM, an IC₅₀ ^(LTC4) of 1 μM and an IC₅₀ ^(IL-4) of 1 μM inhibits immediate (granule-specific), lipid and cytokine mediator release. Although the above specific examples utilize the IC₅₀s of one representative mediator of each class, skilled artisans will appreciate that the IC₅₀s of a plurality, or even all, mediators comprising one or more of the classes may be obtained. The quantity(ies) and identity(ies) of mediators for which IC₅₀ data should be ascertained for a particular compound and application will be apparent to those of skill in the art.

Similar assays may be utilized to confirm inhibition of signal transduction cascades initiated by other Fc receptors, such as FcαRI, FcγRI and/or FcγRIII signaling, with routine modification. For example, the ability of the compounds to inhibit FcγRI signal transduction may be confirmed in assays similar to those described above, with the exception that the FcγRI signaling cascade is activated, for example by incubating the cells with IgG and an IgG-specific allergen or antibody, instead of IgE and an IgE-specific allergen or antibody. Suitable cell types, activating agents and agents to quantify to confirm inhibition of other Fc receptors, such as Fc receptors that comprise a gamma homodimer, will be apparent to those of skill in the art.

One particularly useful class of compounds includes those 2,4-pyrimidinediamine compounds that inhibit the release of immediate granule-specific mediators and late stage mediators with approximately equivalent IC₅₀s. By approximately equivalent is meant that the IC₅₀s for each mediator type are within about a 10-fold range of one another. Another particularly useful class of compounds includes those 2,4-pyrimidinediamine compounds that inhibit the release of immediate granule-specific mediators, lipid mediators and cytokine mediators with approximately equivalent IC₅₀s. In a specific embodiment, such compounds inhibit the release of the following mediators with approximately equivalent IC₅₀s: histamine, tryptase, hexosaminidase, IL-4, IL-5, IL-6, IL-13, TNFα and LTC4. Such compounds are particularly useful for, among other things, ameliorating or avoiding altogether both the early and late stage responses associated with atopic or immediate Type I hypersensitivity reactions.

Ideally, the ability to inhibit the release of all desired types of mediators will reside in a single compound. However, mixtures of compounds can also be identified that achieve the same result. For example, a first compound which inhibits the release of granule specific mediators may be used in combination with a second compound which inhibits the release and/or synthesis of cytokine mediators.

In addition to the FcεRI or FcγRI degranulation pathways discussed above, degranulation of mast and/or basophil cells can be induced by other agents. For example, ionomycin, a calcium ionophore that bypasses the early FcεRI or FcγRI signal transduction machinery of the cell, directly induces a calcium flux that triggers degranulation. Referring again to FIG. 2, activated PLCγ initiates pathways that lead to, among other things, calcium ion mobilization and subsequent degranulation. As illustrated, this Ca²⁺ mobilization is triggered late in the FcεRI signal transduction pathway. As mentioned above, and as illustrated in FIG. 3, ionomycin directly induces Ca²⁺ mobilization and a Ca²⁺ flux that leads to degranulation. Other ionophores that induce degranulation in this manner include A23187. The ability of granulation-inducing ionophores such as ionomycin to bypass the early stages of the FcεRI and/or FcγRI signaling cascades may be used as a counter screen to identify active compounds of the invention that specifically exert their degranulation-inhibitory activity by blocking or inhibiting the early FcεRI or FcγRI signaling cascades, as discussed above. Compounds which specifically inhibit such early FcεRI or FcγRI-mediated degranulation inhibit not only degranulation and subsequent rapid release of histamine, tryptase and other granule contents, but also inhibit the pro-inflammatory activation pathways causing the release of TNFα, IL-4, IL-13 and the lipid mediators such as LTC4. Thus, compounds which specifically inhibit such early FcεRI and/or FcγRI-mediated degranulation block or inhibit not only acute atopic or Type I hypersensitivity reactions, but also late responses involving multiple inflammatory mediators.

Compounds of the invention that specifically inhibit early FcεRI and/or FcγRI-mediated degranulation are those compounds that inhibit FcεRI and/or FcγRI-mediated degranulation (for example, have an IC₅₀ of less than about 20 μM with respect to the release of a granule-specific mediator or component as measured in an in vitro assay with cells stimulated with an IgE or IgG binding agent) but that do not appreciably inhibit ionophore-induced degranulation. In one embodiment, compounds are considered to not appreciably inhibit ionophore-induced degranulation if they exhibit an IC₅₀ of ionophore-induced degranulation of greater than about 20 μM, as measured in an in vitro assay. Of course, active compounds that exhibit even higher IC₅₀s of ionophore-induced degranulation, or that do not inhibit ionophore-induced degranulation at all, are particularly useful. In another embodiment, compounds are considered to not appreciably inhibit ionophore-induced degranulation if they exhibit a greater than 10-fold difference in their IC₅₀s of FcεRI and/or FcγRI-mediated degranulation and ionophore-induced degranulation, as measured in an in vitro assay. Assays suitable for determining the IC₅₀ of ionophore-induced degranulation include any of the previously-described degranulation assays, with the modification that the cells are stimulated or activated with a degranulation-inducing calcium ionophore such as ionomycin or A23187 (A.G. Scientific, San Diego, Calif.) instead of anti-IgE antibodies or an IgE-specific allergen. Specific assays for assessing the ability of a particular 2,4-pyrimidinediamine compound of the invention to inhibit ionophore-induced degranulation are provided in the Examples section.

As will be recognized by skilled artisans, compounds which exhibit a high degree of selectivity of FcεRI-mediated degranulation find particular use, as such compounds selectively target the FcεRI cascade and do not interfere with other degranulation mechanisms. Similarly, compounds which exhibit a high degree of selectivity of FcγRI-mediated degranulation find particular use, as such compounds selectively target the FcγRI cascade and do not interfere with other degranulation mechanisms. Compounds which exhibit a high degree of selectivity are generally 10-fold or more selective for FcεRI- or FcγRI -mediated degranulation over ionophore-induced degranulation, such as ionomycin-induced degranulation.

Biochemical and other data confirm that the 2,4-pyrimidinediamine compounds described herein are potent inhibitors of Syk kinase activity. For example, in experiments with an isolated Syk kinase, of twenty four 2,4-pyrimidinediamine compounds tested, all but two inhibited the Syk kinase catalyzed phosphorylation of a peptide substrate with IC50s in the submicromolar range. The remaining compounds inhibited phosphorylation in the micromolar range. In addition, of sixteen compounds tested in an in vitro assay with mast cells, all inhibited phosphorylation of Syk kinase substrates (e.g., PLC-gammal, LAT) and proteins downstream of Syk kinase (e.g., JNK, p38, Erk1/2 and PKB, when tested), but not proteins upstream of Syk kinase in the cascade (e.g., Lyn). Phosphorylation of Lyn substrates was not inhibited by the 2,4-pyrimidinediamine compounds tested. Moreover, for the following compounds, a high correlation was observed between their inhibition of Syk kinase activity in biochemical assays (IC₅₀s in the range of 3 to 1850 nM) and their inhibition of FcεR1-mediated degranulation in mast cells (IC₅₀s in the range of 30 to 1650 nM): R950373, R950368, R921302, R945371, R945370, R945369, R945365, R921304, R945144, R945140, R945071, R940358, R940353, R940352, R940351, R940350, R940347, R921303, R940338, R940323, R940290, R940277, R940276, R940275, R940269, R940255, R935393, R935372, R935366, R935310, R935309, R935307, R935304, R935302, R935293, R935237, R935198, R935196, R935194, R935193, R935191, R935190, R935138, R927050, R926968, R926956, R926931, R926891, R926839, R926834, R926816, R926813, R926791, R926782, R926780, R926757, R926753, R926745, R926715, R926508, R926505, R926502, R926501, R926500, R921218, R921147, R920410, R909268, R921219, R908712, R908702.

Accordingly, the activity of the 2,4-pyrimidinediamine compounds of the invention may also be confirmed in biochemical or cellular assays of Syk kinase activity. Referring again to FIG. 2, in the FcεRI signaling cascade in mast and/or basophil cells, Syk kinase phosphorylates LAT and PLC-gammal, which leads to, among other things, degranulation. Any of these activities may be used to confirm the activity of the 2,4-pyrimidinediamine compounds of the invention. In one embodiment, the activity is confirmed by contacting an isolated Syk kinase, or an active fragment thereof with a 2,4-pyrimidinediamine compound in the presence of a Syk kinase substrate (e.g., a synthetic peptide or a protein that is known to be phophorylated by Syk in a signaling cascade) and assessing whether the Syk kinase phosphorylated the substrate. Alternatively, the assay may be carried out with cells that express a Syk kinase. The cells may express the Syk kinase endogenously or they may be engineered to express a recombinant Syk kinase. The cells may optionally also express the Syk kinase substrate. Cells suitable for performing such confirmation assays, as well as methods of engineering suitable cells will be apparent to those of skill in the art. Specific examples of biochemical and cellular assays suitable for confirming the activity of the 2,4-pyrimidinediamine compounds are provided in the Examples section.

Generally, compounds that are Syk kinase inhibitors will exhibit an IC₅₀ with respect to a Syk kinase activity, such as the ability of Syk kinase to phosphorylate a synthetic or endogenous substrate, in an in vitro or cellular assay in the range of about 20 μM or less. Skilled artisans will appreciate that compounds that exhibit lower IC50s, such as in the range of 10 μM, 100 nM, 10 nM, 1 nM, or even lower, are particularly useful.

6.5 Uses and Compositions

As previously discussed, the active compounds of the invention inhibit Fc receptor signaling cascades, especially those Fc receptors including a gamma homodimer, such as the FcεRI and/or FcγRI signaling cascades, that lead to, among other things, the release and/or synthesis of chemical mediators from cells, either via degranulation or other processes. As also discussed, the active compounds are also potent inhibitors of Syk kinase. As a consequence of these activities, the active compounds of the invention may be used in a variety of in vitro, in vivo and ex vivo contexts to regulate or inhibit Syk kinase, signaling cascades in which Syk kinase plays a role, Fc receptor signaling cascades, and the biological responses effected by such signaling cascades. For example, in one embodiment, the compounds may be used to inhibit Syk kinase, either in vitro or in vivo, in virtually any cell type expressing Syk kinase. They may also be used to regulate signal transduction cascades in which Syk kinase plays a role. Such Syk-dependent signal transduction cascades include, but are not limited to, the FcεRI, FcγRI, FcγRIII, BCR and integrin signal transduction cascades. The compounds may also be used in vitro or in vivo to regulate, and in particular inhibit, cellular or biological responses effected by such Syk-dependent signal transduction cascades. Such cellular or biological responses include, but are not limited to, respiratory burst, cellular adhesion, cellular degranulation, cell spreading, cell migration, cell aggregation, phagcytosis, cytokine synthesis and release, cell maturation and Ca²⁺ flux. Importantly, the compounds may be used to inhibit Syk kinase in vivo as a therapeutic approach towards the treatment or prevention of diseases mediated, either wholly or in part, by a Syk kinase activity. Non-limiting examples of Syk kinase mediated diseases that may be treated or prevented with the compounds are those discussed in more detail, below.

In another embodiment, the active compounds may be used to regulate or inhibit the Fc receptor signaling cascades and/or FcεRI- and/or FcγRI-mediated degranulation as a therapeutic approach towards the treatment or prevention of diseases characterized by, caused by and/or associated with the release or synthesis of chemical mediators of such Fc receptor signaling cascades or degranulation. Such treatments may be administered to animals in veterinary contexts or to humans. Diseases that are characterized by, caused by or associated with such mediator release, synthesis or degranulation, and that can therefore be treated or prevented with the active compounds include, by way of example and not limitation, atopy or anaphylactic hypersensitivity or allergic reactions, allergies (e.g., allergic conjunctivitis, allergic rhinitis, atopic asthma, atopic dermatitis and food allergies), low grade scarring (e.g., of scleroderma, increased fibrosis, keloids, post-surgical scars, pulmonary fibrosis, vascular spasms, migraine, reperfusion injury and post myocardial infarction), diseases associated with tissue destruction (e.g., of COPD, cardiobronchitis and post myocardial infarction), diseases associated with tissue inflammation (e.g., irritable bowel syndrome, spastic colon and inflammatory bowel disease), inflammation and scarring.

When used to treat or prevent such diseases, the active compounds may be administered singly, as mixtures of one or more active compounds or in mixture or combination with other agents useful for treating such diseases and/or the symptoms associated with such diseases. The active compounds may also be administered in mixture or in combination with agents useful to treat other disorders or maladies, such as steroids, membrane stablizers, 5LO inhibitors, leukotriene synthesis and receptor inhibitors, inhibitors of IgE isotype switching or IgE synthesis, IgG isotype switching or IgG synthesis, β-agonists, tryptase inhibitors, aspirin, COX inhibitors, methotrexate, anti-TNF drugs, retuxin, PD4 inhibitors, p38 inhibitors, PDE4 inhibitors, and antihistamines, to name a few. The active compounds may be administered per se in the form of prodrugs or as pharmaceutical compositions, comprising an active compound or prodrug.

Pharmaceutical compositions comprising the active compounds of the invention (or prodrugs thereof) may be manufactured by means of conventional mixing, dissolving, granulating, dragee-making levigating, emulsifying, encapsulating, entrapping or lyophilization processes. The compositions may be formulated in conventional manner using one or more physiologically acceptable carriers, diluents, excipients or auxiliaries which facilitate processing of the active compounds into preparations which can be used pharmaceutically.

The active compound or prodrug may be formulated in the pharmaceutical compositions per se, or in the form of a hydrate, solvate, N-oxide or pharmaceutically acceptable salt, as previously described. Typically, such salts are more soluble in aqueous solutions than the corresponding free acids and bases, but salts having lower solubility than the corresponding free acids and bases may also be formed.

Pharmaceutical compositions of the invention may take a form suitable for virtually any mode of administration, including, for example, topical, ocular, oral, buccal, systemic, nasal, injection, transdermal, rectal, vaginal, etc., or a form suitable for administration by inhalation or insufflation.

For topical administration, the active compound(s) or prodrug(s) may be formulated as solutions, gels, ointments, creams, suspensions, etc. as are well-known in the art.

Systemic formulations include those designed for administration by injection, e.g., subcutaneous, intravenous, intramuscular, intrathecal or intraperitoneal injection, as well as those designed for transdermal, transmucosal oral or pulmonary administration.

Useful injectable preparations include sterile suspensions, solutions or emulsions of the active compound(s) in aqueous or oily vehicles. The compositions may also contain formulating agents, such as suspending, stabilizing and/or dispersing agent. The formulations for injection may be presented in unit dosage form, e.g., in ampules or in multidose containers, and may contain added preservatives.

Alternatively, the injectable formulation may be provided in powder form for reconstitution with a suitable vehicle, including but not limited to sterile pyrogen free water, buffer, dextrose solution, etc., before use. To this end, the active compound(s) may be dried. by any art-known technique, such as lyophilization, and reconstituted prior to use.

For transmucosal administration, penetrants appropriate to the barrier to be permeated are used in the formulation. Such penetrants are known in the art.

For oral administration, the pharmaceutical compositions may take the form of, for example, lozenges, tablets or capsules prepared by conventional means with pharmaceutically acceptable excipients such as binding agents (e.g., pregelatinised maize starch, polyvinylpyrrolidone or hydroxypropyl methylcellulose); fillers (e.g., lactose, microcrystalline cellulose or calcium hydrogen phosphate); lubricants (e.g., magnesium stearate, talc or silica); disintegrants (e.g., potato starch or sodium starch glycolate); or wetting agents (e.g., sodium lauryl sulfate). The tablets may be coated by methods well known in the art with, for example, sugars, films or enteric coatings. Compounds which are particularly suitable for oral administration include Compounds R940350, R935372, R935193, R927050 and R935391.

Liquid preparations for oral administration may take the form of, for example, elixirs, solutions, syrups or suspensions, or they may be presented as a dry product for constitution with water or other suitable vehicle before use. Such liquid preparations may be prepared by conventional means with pharmaceutically acceptable additives such as suspending agents (e.g., sorbitol syrup, cellulose derivatives or hydrogenated edible fats); emulsifying agents (e.g., lecithin or acacia); non-aqueous vehicles (e.g., almond oil, oily esters, ethyl alcohol, cremophore™ or fractionated vegetable oils); and preservatives (e.g., methyl or propyl-p-hydroxybenzoates or sorbic acid). The preparations may also contain buffer salts, preservatives, flavoring, coloring and sweetening agents as appropriate.

Preparations for oral administration may be suitably formulated to give controlled release of the active compound or prodrug, as is well known.

For buccal administration, the compositions may take the form of tablets or lozenges formulated in conventional manner.

For rectal and vaginal routes of administration, the active compound(s) may be formulated as solutions (for retention enemas) suppositories or ointments containing conventional suppository bases such as cocoa butter or other glycerides.

For nasal administration or administration by inhalation or insufflation, the active compound(s) or prodrug(s) can be conveniently delivered in the form of an aerosol spray from pressurized packs or a nebulizer with the use of a suitable propellant, e.g., dichlorodifluoromethane, trichlorofluoromethane, dichlorotetrafluoroethane, fluorocarbons, carbon dioxide or other suitable gas. In the case of a pressurized aerosol, the dosage unit may be determined by providing a valve to deliver a metered amount. Capsules and cartridges for use in an inhaler or insufflator (for example capsules and cartridges comprised of gelatin) may be formulated containing a powder mix of the compound and a suitable powder base such as lactose or starch.

A specific example of an aqueous suspension formulation suitable for nasal administration using commercially-available nasal spray devices includes the following ingredients: active compound or prodrug (0.5-20 mg/ml); benzalkonium chloride (0.1-0.2 mg/mL); polysorbate 80 (TWEEN® 80; 0.5-5 mg/ml); carboxymethylcellulose sodium or microcrystalline cellulose (1-15 mg/ml); phenylethanol (14 mg/ml); and dextrose (20-50 mg/ml). The pH of the final suspension can be adjusted to range from about pH5 to pH7, with a pH of about pH 5.5 being typical.

Another specific example of an aqueous suspension suitable for administration of the compounds via inhalation, and in particular for such administration of Compound R921218, contains 1-20 mg/mL Compound or prodrug, 0.1-1% (v/v) Polysorbate 80 (TWEEN®80), 50 mM citrate and/or 0.9% sodium chloride.

For ocular administration, the active compound(s) or prodrug(s) may be formulated as a solution, emulsion, suspension, etc. suitable for administration to the eye. A variety of vehicles suitable for administering compounds to the eye are known in the art. Specific non-limiting examples are described in U.S. Pat. No. 6,261,547; U.S. Pat. No. 6,197,934; U.S. Pat. No. 6,056,950; U.S. Pat. No. 5,800,807; U.S. Pat. No. 5,776,445; U.S. Pat. No. 5,698,219; U.S. Pat. No. 5,521,222; U.S. Pat. No. 5,403,841; U.S. Pat. No. 5,077,033; U.S. Pat. No. 4,882,150; and U.S. Pat. No. 4,738,851.

For prolonged delivery, the active compound(s) or prodrug(s) can be formulated as a depot preparation for administration by implantation or intramuscular injection. The active ingredient may be formulated with suitable polymeric or hydrophobic materials (e.g., as an emulsion in an acceptable oil) or ion exchange resins, or as sparingly soluble derivatives, e.g., as a sparingly soluble salt. Alternatively, transdermal delivery systems manufactured as an adhesive disc or patch which slowly releases the active compound(s) for percutaneous absorption may be used. To this end, permeation enhancers may be used to facilitate transdermal penetration of the active compound(s). Suitable transdermal patches are described in for example, U.S. Pat. No. 5,407,713.; U.S. Pat. No. 5,352,456; U.S. Pat. No. 5,332,213; U.S. Pat. No. 5,336,168; U.S. Pat. No. 5,290,561; U.S. Pat. No. 5,254,346; U.S. Pat. No. 5,164,189; U.S. Pat. No. 5,163,899; U.S. Pat. No. 5,088,977; U.S. Pat. No. 5,087,240; U.S. Pat. No. 5,008,110; and U.S. Pat. No. 4,921,475.

Alternatively, other pharmaceutical delivery systems may be employed. Liposomes and emulsions are well-known examples of delivery vehicles that may be used to deliver active compound(s) or prodrug(s). Certain organic solvents such as dimethylsulfoxide (DMSO) may also be employed, although usually at the cost of greater toxicity.

The pharmaceutical compositions may, if desired, be presented in a pack or dispenser device which may contain one or more unit dosage forms containing the active compound(s). The pack may, for example, comprise metal or plastic foil, such as a blister pack. The pack or dispenser device may be accompanied by instructions for administration.

6.6 Effective Dosages

The active compound(s) or prodrug(s) of the invention, or compositions thereof, will generally be used in an amount effective to achieve the intended result, for example in an amount effective to treat or prevent the particular disease being treated. The compound(s) may be administered therapeutically to achieve therapeutic benefit or prophylactically to achieve prophylactic benefit. By therapeutic benefit is meant eradication or amelioration of the underlying disorder being treated and/or eradication or amelioration of one or more of the symptoms associated with the underlying disorder such that the patient reports an improvement in feeling or condition, notwithstanding that the patient may still be afflicted with the underlying disorder. For example, administration of a compound to a patient suffering from an allergy provides therapeutic benefit not only when the underlying allergic response is eradicated or ameliorated, but also when the patient reports a decrease in the severity or duration of the symptoms associated with the allergy following exposure to the allergen. As another example, therapeutic benefit in the context of asthma includes an improvement in respiration following the onset of an asthmatic attack, or a reduction in the frequency or severity of asthmatic episodes. Therapeutic benefit also includes halting or slowing the progression of the disease, regardless of whether improvement is realized.

For prophylactic administration, the compound may be administered to a patient at risk of developing one of the previously described diseases. For example, if it is unknown whether a patient is allergic to a particular drug, the compound may be administered prior to administration of the drug to avoid or ameliorate an allergic response to the drug. Alternatively, prophylactic administration may be applied to avoid the onset of symptoms in a patient diagnosed with the underlying disorder. For example, a compound may be administered to an allergy sufferer prior to expected exposure to the allergen. Compounds may also be administered prophylactically to healthy individuals who are repeatedly exposed to agents known to one of the above-described maladies to prevent the onset of the disorder. For example, a compound may be administered to a healthy individual who is repeatedly exposed to an allergen known to induce allergies, such as latex, in an effort to prevent the individual from developing an allergy. Alternatively, a compound may be administered to a patient suffering from asthma prior to partaking in activities which trigger asthma attacks to lessen the severity of, or avoid altogether, an asthmatic episode.

The amount of compound administered will depend upon a variety of factors, including, for example, the particular indication being treated, the mode of administration, whether the desired benefit is prophylactic or therapeutic, the severity of the indication being treated and the age and weight of the patient, the bioavailability of the particular active compound, etc. Determination of an effective dosage is well within the capabilities of those skilled in the art.

Effective dosages may be estimated initially from in vitro assays. For example, an initial dosage for use in animals may be formulated to achieve a circulating blood or serum concentration of active compound that is at or above an IC₅₀ of the particular compound as measured in as in vitro assay, such as the in vitro CHMC or BMMC and other in vitro assays described in the Examples section. Calculating dosages to achieve such circulating blood or serum concentrations taking into account the bioavailability of the particular compound is well within the capabilities of skilled artisans. For guidance, the reader is referred to Fingl & Woodbury, “General Principles,” In: Goodman and Gilman's The Pharmaceutical Basis of Therapeutics, Chapter 1, pp. 146, latest edition, Pagamonon Press, and the references cited therein.

Initial dosages can also be estimated from in vivo data, such as animal models. Animal models useful for testing the efficacy of compounds to treat or prevent the various diseases described above are well-known in the art. Suitable animal models of hypersensitivity or allergic reactions are described in Foster, 1995, Allergy 50(21Suppl):6-9, discussion 34-38 and Tumas et al., 2001, J. Allergy Clin. Immunol. 107(6):1025-1033. Suitable animal models of allergic rhinitis are described in Szelenyi et al., 2000, Arzneimittelforschung 50(11):103742; Kawaguchi et al., 1994, Clin. Exp. Allergy 24(3):238-244 and Sugimoto et al., 2000, Immunopharmacology 48(1):1-7. Suitable animal models of allergic conjunctivitis are described in Carreras et al., 1993, Br. J. Ophthalmol. 77(8):509-514; Saiga et al., 1992, Ophthalmic Res. 24(1):45-50; and Kunert et al., 2001, Invest. Ophthalmol. Vis. Sci. 42(11):2483-2489. Suitable animal models of systemic mastocytosis are described in O'Keefe et al., 1987, J. Vet. Intern. Med. 1(2):75-80 and Bean-Knudsen et al., 1989, Vet. Pathol. 26(1):90-92. Suitable animal models of hyper IgE syndrome are described in Claman et al., 1990, Clin. Immunol. Immunopathol. 56(1):46-53. Suitable animal models of B-cell lymphoma are described in Hough et al., 1998, Proc. Natl. Acad. Sci. USA 95:13853-13858 and Hakim et al., 1996, J. Immunol. 157(12):5503-5511. Suitable animal models of atopic disorders such as atopic dermatitis, atopic eczema and atopic asthma are described in Chan et al., 2001, J. Invest. Dermatol. 117(4):977-983 and Suto et al., 1999, Int. Arch. Allergy Immunol. 120(Suppl 1):70-75. Ordinarily skilled artisans can routinely adapt such information to determine dosages suitable for human administration. Additional suitable animal models are described in the Examples section.

Dosage amounts will typically be in the range of from about 0.0001 or 0.001 or 0.01 mg/kg/day to about 100 mg/kg/day, but may be higher or lower, depending upon, among other factors, the activity of the compound, its bioavailability, the mode of administration and various factors discussed above. Dosage amount and interval may be adjusted individually to provide plasma levels of the compound(s) which are sufficient to maintain therapeutic or prophylactic effect. For example, the compounds may be administered once per week, several times per week (e.g., every other day), once per day or multiple times per day, depending upon, among other things, the mode of administration, the specific indication being treated and the judgment of the prescribing physician. In cases of local administration or selective uptake, such as local topical administration, the effective local concentration of active compound(s) may not be related to plasma concentration. Skilled artisans will be able to optimize effective local dosages without undue experimentation.

Preferably, the compound(s) will provide therapeutic or prophylactic benefit without causing substantial toxicity. Toxicity of the compound(s) may be determined using standard pharmaceutical procedures. The dose ratio between toxic and therapeutic (or prophylactic) effect is the therapeutic index. Compounds(s) that exhibit high therapeutic indices are preferred.

The invention having been described, the following examples are offered by way of illustration and not limitation.

7. EXAMPLES 7.1 Synthesis of Starting Materials and Intermediates Useful for Synthesizing The 2,4-Pyrimidinediamine Compounds According to Schemes (I)-(V)

Sections 7.1.1-7.1.141 of copending application Ser. No. 10/355,543 filed Jan. 31, 2003 describe the synthesis of various 2-chloro-4N-substituted-pyrimidinediamine useful for synthesizing 2,4-pyrimidinediamine compounds described herein. The content of these Sections 7.1.1-7.1.141 are incorporated by reference.

7.2 Synthesis of Amines and Amine Precursors

Sections 7.2.1-7.2.47 of copending application Ser. No. 10/355,543 filed Jan. 31, 2003 describe the synthesis of various amines useful for synthesizing 2,4-pyrimidinediamine compounds described herein. The content of these Sections 7.2.1-7.2.47 are incorporated herein by reference.

7.3 Synthesis of 2,4-Pyrimidinediamines

Sections 7.3.1-7.3.1165 of copending application Ser. No. 10/355,543 filed Jan. 31, 2003 describe the synthesis of the 2,4-pyrimidinediamine compounds listed below. The content of these Sections 7.3.1-7.3.1165 are incorporated herein by reference. Compounds R008951, R008952, R008953, R008955, R008956, R008958, R070153 and R070790 as described in Example 7.3.1099 below (Section 7.3.1099 of copending Ser. No. 10/355,543 filed Jan. 31, 2003) were purchased from Contact Services. Example Compound Chemical Name 7.3.1 R926069 N2,N4-Bis(4-ethoxyphenyl)-2,4-pyrimidinediamine 7.3.2 R921218 N2,N4-Bis(3-hydroxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.3 R926017 N2,N4-Bis(4-methoxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.4 R926018 N2,N4-Bis(3-fluoro-4-trifluoromethylphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.5 R926037 N2,N4-Bis(3,4-tetrafluoroethylendioxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.6 R926038 N2,N4-Bis(3-trifluoromethoxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.7 R926039 N2,N4-Bis(4-chloro-3-trifluoromethylphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.8 R926064 N2,N4-Bis(3-ethoxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.9 R926339 N2,N4-Bis(3-hydroxy-4-methoxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.10 R926340 N2,N4-Bis(4-ethoxycarbonylamino-3-hydroxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.11 R926341 N2,N4-Bis(-3-hydroxy-4-methylphenyl)-5-fluoro-2,4-pyrimidinediaminediamine 7.3.12 R926342 N2,N4-Bis[4-(2-methoxyethyleneoxy)phenyl]-5-fluoro--2,4-pyrimidinediamine 7.3.13 R909237 N2,N4-Bis(dihydrobenzofuran-5-yl)-5-fluoro-2,4-pyrimidinediaminediamine 7.3.14 R926065 N2,N4-Bis(3-methoxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.15 R926086 N2,N4-Bis[4-(N,N-dimethylamino)phenyl]-5-fluoro-2,4-pyrimidinediamine 7.3.16 R926109 N2,N4-Bis(3,4-ethylenedioxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.17 R926110 N2,N4-Bis(3,4-dimethoxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.18 R926114 N2,N4-Bis[4-(N-morpholino)phenyl]-5-fluoro-2,4-pyrimidinediamine 7.3.19 R926206 N2,N4-Bis(4-chlorophenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.20 R926209 N2,N4-Bis(3-chlorophenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.21 R926222 N2,N4-Bis(4-tert-butylphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.22 R926223 N2,N4-Bis(3-chloro-4-fluorophenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.23 R926224 N2,N4-Bis(4-fluorophenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.24 R926225 N2,N4-Bis(4-methylphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.25 R926240 N2,N4-Bis[(4-methoxycarbonylmethyleneoxy)phenyl]-5-fluoro-2,4-pyrimidinediamine 7.3.26 R926254 (±)-N2,N4-Bis[4-methoxycarbonyl(α-methyl)methyleneoxyphenyl]-5-fluoro-2,4-pyrimidinediamine 7.3.27 R926255 N2,N4-Bis[(3-methoxycarbonylmethyleneoxy)phenyl]-5-fluoro-2,4-pyrimidinediamine 7.3.28 R926387 N2,N4-Bis(3-acetyloxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.29 R926394 N2,N4-Bis(3-benzyloxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.30 R926398 N2,N4-Bis(2-phenylphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.31 R926404 N2,N4-Bis(2-phenylphenyl)-5-methyl-2,4-pyrimidinediamine 7.3.32 R926399 N2,N4-Bis[(4-methoxy-3-phenyl)phenyl]-5-fluoro-2,4-pyrimidinediamine 7.3.33 R926400 N2,N4-Bis[(2-methoxy-5-phenyl)phenyl]-5-fluoro-2,4-pyrimidinediamine 7.3.34 R926401 N2,N4-Bis[(2-methoxy-5-methyl-4-phenyl)phenyl]-5-fluoro-2,4-pyrimidinediamine 7.3.35 R926402 N2,N4-Bis[(2-methyl-5-phenyl)phenyl]-5-fluoro-2,4-pyrimidinediamine 7.3.36 R926403 N2,N4-Bis[(3-phenyl)phenyl]-5-fluoro-2,4-pyrimidinediamine 7.3.37 R926405 N2,N4-Bis(4-hydroxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.38 R926469 N2,N4′-Bis(4-hydroxy-3-methylphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.39 R926574 N2,N4-Bis[4-(tert-butoxycarbonylmethyleneoxy)phenyl]-5-fluoro-2,4-pyrimidinediamine 7.3.40 R926582 N2,N4-Bis(indol-5-yl)-5-fluoro-2,4-pyrimidinediamine 7.3.41 R926319 N2,N4-Bis(4-cyanomethylphenyl)-5-ethoxycarbonyl-2,4-pyrimidinediamine 7.3.42 R926320 N2,N4-Bis(3-indazol-6-yl)-5-ethoxycarbonyl-2,4-pyrimidinediamine 7.3.43 R926321 N2,N4-Bis(3-indazol-7-yl)-5-ethoxycarbonyl-2,4-pyrimidinediamine 7.3.44 R926325 N2,N4-Bis[6-(1,4-benzoxazine-3-onyl)]-5-ethoxycarbonyl-2,4-pyrimidinediamine 7.3.45 R926331 N2,N4-Bis(4-ethoxycarbonylmethyleneaminophenyl)-5-ethoxycarbonyl-2,4-pyrimidinediamine 7.3.46 R926058 N2,N4-Bis(4-ethoxyphenyl)-6-methoxycarbonyl-2,4-pyrimidinediamine 7.3.47 R926068 N2,N4-Bis(4-ethoxyphenyl)-5-methyl-2,4-pyrimidinediamine 7.3.48 R926072 N2,N4-Bis(4-ethoxyphenyl)-6-chloro-2,4-pyrimidinediamine 7.3.49 R926242 N2,N4-Bis(3,4-ethylenedioxyphenyl)-5-methyl-2,4-pyrimidinediamine 7.3.50 R926243 N2,N4-Bis(3,4-ethylenedioxyphenyl)-2,4-pyrimidinediamine 7.3.51 R926248 N2,N4-Bis(3-hydroxyphenyl)-5-methyl-2,4-pyrimidinediamine 7.3.52 R926249 N2,N4-Bis(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.53 R926256 N2,N4-Bis[(4-methoxycarbonylmethyleneoxy)phenyl]-2,4-pyrimidinediamine 7.3.54 R926257 (±)-N2,N4-Bis[4-methoxycarbonyl(alpha-methyl)methyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.55 R926258 N2,N4-Bis(4-methoxycarbonylmethyleneoxyphenyl)-5-methyl-2,4-pyrimidinediamine 7.3.56 R926259 (±)-N2,N4-Bis[4-ethoxycarbonyl(alpha-methyl)methyleneoxyphenyl]-5-methyl-2,4- pyrimidinediamine 7.3.57 R926397 N2,N4-Bis[2-(4-hydroxyphenyl)ethyl]-5-methyl-2,4-pyrimidinediamine 7.3.58 R940089 N2,N4-Bis-(3,4-dimethoxypenyl)-5-nitro-2,4-pyrimidinediamine 7.3.59 R940090 N2,N4-Bis-(4-ethoxypenyl)-5-nitro-2,4-pyrimidinediamine 7.3.60 R940095 N2,N4-Bis-(3,4-ethylenedioxyphenyl)-5-nitro-2,4-pyrimidinediamine 7.3.61 R940096 N2,N4-Bis-[(4-ethoxycarbonylmethyleneoxy)phenyl]-5-nitro-2,4-pyrimidinediamine 7.3.62 R940100 N2,N4-Bis-(2,2-difluoro-1,3-benzodioxol-5-yl)-5-nitro-2,4-pyrimidinediamine 7.3.63 R940215 N2,N4-Bis-(3,5-dichloro-4-hydroxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.64 R940216 N2,N4-Bis-(3-chloro-4-hydroxy-5-methylphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.65 R940217 N2,N4-Bis-(2,3-dimethyl-4-hydroxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.66 R940222 N2,N4-Bis-(4-Acetamidophenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.67 R940297 N2,N4-Bis(3-isopropylphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.68 R926688 N2,N4-Bis(3,4,5-trimethoxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.69 R925800 N2,N4-Bis(2-methyl-5-phenylphenyl)-5-bromo-2,4-pyrimidinediamine 7.3.70 R925801 N2,N4-Bis(2-methoxy-5-methyl-4-phenylphenyl)-5-bromo-2,4-pyrimidinediamine 7.3.71 R926594 N2,N4-Bis(indol-6-yl)-5-fluoro-2,4-pyrimidinediamine 7.3.72 R926604 N2,N4-Bis(2-methoxycarbonyl benzofuran-5-yl)-5-fluoro-2,4-pyrimidinediamine 7.3.73 R926605 N2,N4-Bis[4-(methoxycarbonylmethyl)phenyl]-5-fluoro-2,4-pyrimidinediamine 7.3.74 R926616 N2,N4-Bis(2-ethoxycarbonylindol-5-yl)-5-fluoro-2,4-pyrimidinediamine 7.3.75 R926617 N2,N4-Bis(coumarin-6-yl)-5-fluoro-2,4-pyrimidinediamine 7.3.76 R926620 N2,N4-Bis(4-methoxymethyl)coumarin-7-yl)-5-fluoro-2,4-pyrimidinediamine 7.3.77 R925757 N2,N4-Bis(3-(hydroxymethyl)phenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.78 R925767 N2,N4-Bis[(2R)-hydroxy-(1S)-methyl-2-phenylethyl]-5-fluoro-2,4-pyrimidinediamine 7.3.79 R925768 N2,N4-Bis(2-hydroxy-2-phenylethyl)-5-fluoro-2,4-pyrimidinediamine 7.3.80 R925769 N2,N4-Bis(furfuryl)-5-fluoro-2,4-pyrimidinediamine 7.3.81 R925770 N2,N4-Bis(piperonyl)-5-fluoro-2,4-pyrimidineamine 7.3.82 R925772 N2,N4-Dibenzyl-5-fluoro-2,4-pyrimidinediamine 7.3.83 R925776 N2,N4-Bis(3,4-methylenedioxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.84 R925791 N2,N4-Bis[2-(4-hydroxyphenyl)ethyl]-5-fluoro-2,4-pyrimidinediamine 7.3.85 R945057 N2,N4-Bis(4-cyanophenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.86 R926234 N2,N4-Bis(4-ethylphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.87 R926675 N2,N4-Bis(3-chloro-4-hydroxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.88 R926676 N2,N4-Bis[3-chloro-4-(ethoxycarbonylmethyleneoxy)phenyl]-5-fluoro-2,4-pyrimidinediamine 7.3.89 R926681 N2,N4-Bis(3-fluoro-4-hydroxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.90 R926682 N2,N4-Bis(3-acetamidophenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.91 R926683 N2,N4-Bis(2-fluoro-4-hydroxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.92 R926701 N2,N4-Bis(4-isopropoxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.93 R925771 N2,N4-Bis(3,4-ethylenedioxyphenyl)-5-bromo-2,4-pyrimidinediamine 7.3.94 R925778 N2,N4-Bis(3-hydroxyphenyl)-5-bromo-2,4-pyrimidinediamine 7.3.95 R925779 N2,N4-Bis[4-(ethoxycarbonylmethyleneoxy)phenyl]-5-bromo-2,4-pyrimidinediamine 7.3.96 R925792 N2,N4-Bis[2-(4-hydroxyphenyl)ethyl]-5-bromo-2,4-pyrimidinediamine 7.3.97 R925798 N2,N4-Bis(2-phenylphenyl)-5-bromo-2,4-pyrimidinediamine 7.3.98 R925799 N2,N4-Bis(2-methoxy-5-phenylphenyl)-5-bromo-2,4-pyrimidinediamine 7.3.99 R925802 N2,N4-Bis(4-methoxy-3-phenylphenyl)-5-bromo-2,4-pyrimidinediamine 7.3.100 R925803 N2,N4-Bis(3-phenylphenyl)-5-bromo-2,4-pyrimidinediamine 7.3.101 R925773 N2,N4-Bis(3,4-ethylenedioxyphenyl)-5-cyano-2,4-pyrimidinediamine 7.3.102 R925774 N2,N4-Bis(3-hydroxyphenyl)-5-cyano-2,4-pyrimidinediamine 7.3.103 R925775 N2,N4-Bis[4-(ethoxycarbonylmethyleneoxy)phenyl]-5-cyano-2,4-pyrimidinediamine 7.3.104 R935192 N2,N4-Bis(1-methyl-indazolin-5-yl)-5-fluoro-2,4-pyrimidinediamine 7.3.105 R935205 N2,N4-Bis[1-(methoxycarbonyl)methyl-indazoline-6-yl]-5-fluoro-2,4-pyrimidinediamine 7.3.106 R935211 N2,N4-Bis[1-(methoxycarbonyl)methyl-indazoline-5-yl]-5-fluoro-2,4-pyrimidinediamine 7.3.107 R935188 N2,N4-Bis(indazolin-6-yl)-5-fluoro-2,4-pyrimidinediamine 7.3.108 R935189 N2,N4-Bis(indazolin-5-yl)-5-fluoro-2,4-pyrimidinediamine 7.3.109 R925814 N2,N4-Bis(1-ethoxycarbonyl-2-methylpropyl)-5-cyano-2,4-pyrimidinediamine 7.3.110 R925815 N2,N4-Bis(1-methoxycarbonyl-3-methylbutyl)-5-cyano-2,4-pyrimidinediamine 7.3.111 R925819 N2,N4-Bis(methoxycarbonylbenzyl)-5-cyano-2,4-pyrimidinediamine 7.3.112 R926662 N2,N4-Bis[4-(ethoxycarbonylmethyl)phenyl]-5-cyano-2,4-pyrimidinediamine 7.3.113 R935000 N2,N4-Bis(2-methoxy-5-phenylphenyl)-5-methyl-2,4-pyrimidinediamine 7.3.114 R935001 N2,N4-Bis[(2-methyl-5-phenyl)phenyl]-5-methyl-2,4-pyrimidinediamine 7.3.115 R935002 N2,N4-Bis[(4-methoxy-3-phenyl)phenyl]-5-methyl-2,4-pyrimidinediamine 7.3.116 R935003 N2,N4-Bis[(4-phenyl-2-methoxy-5-methyl)phenyl]-5-methyl-2,4-pyrimidinediamine 7.3.117 R935004 N2,N4-Bis[[di-(4-methoxyphenyl)]methyl]-5-fluoro-2,4-pyrimidinediamine 7.3.118 R935005 N2,N4-Bis(diphenylmethyl)-5-fluoro-2,4-pyrimidinediamine 7.3.119 R935006 N2,N4-Bis[di-(4-chlorophenyl)methyl]-5-fluoro-2,4-pyrimidinediamine 7.3.120 R935016 N2,N4-Bis[1(R)-4-methoxyphenylethyl]-5-bromo-2,4-pyrimidineamine 7.3.121 R935075 N2,N4-Bis[3-(2-hydroxyethoxy)phenyl]-5-fluoro-2,4-pyrimidinediamine 7.3.122 R935076 N2,N4-Bis[3-(2-methoxyethyl)oxyphenyl]-5-fluoro-2,4-pyrimidinediamine 7.3.123 R935077 N2,N4-Bis(5-hydroxy-2-isopropylphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.124 R935114 N2,N4-Bis(3-methoxycarbonylmethylenephenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.125 R935162 N2,N4-Bis(3,4-propylenedioxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.126 R935163 N2,N4-Bis(3-chloro-4-fluoropheny)-2,4-pyrimidinediamine 7.3.127 R925849 N2,N4-Bis(3-hydroxyphenyl)-6-ethoxycarbonyl-5-nitro-2,4-pyrimidinediamine 7.3.128 R925852 N2,N4-Bis(3,4-ethylendioxyphenyl)-6-ethoxycarbonyl-5-nitro-2,4-pyrimidinediamine 7.3.129 R925864 N2,N4-Bis(ethoxycarbonylmethyl)-6-ethoxycarbonyl-5-nitro-2,4-pyrimidinediamine 7.3.130 R925790 N2,N4-Bis[2-(4-hydroxyphenyl)ethyl]-2,4-pyrimidinediamine 7.3.131 R925804 N2,N4-Bis(2-phenylphenyl)-2,4-pyrimidinediamine 7.3.132 R925805 N2,N4-Bis(2-methoxy-5-phenylphenyl)-2,4-pyrimidinediamine 7.3.133 R945041 N2,N4-Bis(3-carboxy-4-hydroxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.134 R925806 N2,N4-Bis(4-methoxy-3-phenylphenyl)-2,4-pyrimidinediamine 7.3.135 R925807 N2,N4-Bis(2-methyl-5-phenylphenyl)-2,4-pyrimidinediamine 7.3.136 R925808 N2,N4-Bis(2-methoxy-5-methyl-4-phenylphenyl)-2,4-pyrimidinediamine 7.3.137 R925862 N2,N4-Bis[4-(ethoxycarbonylmethyleneoxy)phenyl]-5-trifluoromethyl-2,4-pyrimidinediamine 7.3.138 R925863 N2,N4-Bis(3-hydroxyphenyl)-5-trifluoromethyl-2,4-pyrimidinediamine 7.3.139 R926663 N2,N4-Bis[4-(ethoxycarbonylmethyl)phenyl]-5-trifluoromethyl-2,4-pyrimidinediamine 7.3.140 R926623 N2,N4-Bis(2,5-dimethyl-4-hydroxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.141 R926461 N2,N4-Bis(3-sodiumphenoxy)-5-fluoro-2,4-pyrimidinediamine 7.3.142 R945051 N2,N4-Bis(3-cyanophenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.143 R945145 N2,N4-Bis(benzothiophen-3-ylmethyl)-5-fluoro-2,4-pyrimidinediamine 7.3.144 R945152 N2,N4-Bis[4-(N-benzylpiperazino)phenyl]-5-fluoro-2,4-pyrimidinediamine 7.3.145 R945038 N2,N4-Bis(3-hydroxy-2-methylphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.146 R950160 N2,N4-Bis(3-nitrophenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.147 R950091 N2,N4-Bis(3-aminophenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.148 R950122 N2,N4-Bis(4-aminophenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.149 R950182 N2,N4-Bis[3-(dimethylamino)phenyl]-5-fluoro-2,4-pyrimidinediamine 7.3.150 R950130 N2,N4-Bis(3-amino-4-methylphenyl)-2,4-pyrimidinediamine 7.3.151 R950129 N2,N4-Bis(3-amino-4-methylphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.152 R950083 N2,N4-Bis[(4-methylsulfonylamino)phenyl]-5-fluoro-2,4-pyrimidinediamine 7.3.153 R950090 N2,N4-Bis(4-benzyloxy-3-trifluoromethylphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.154 R950092 N2,N4-Bis(3-cyano-4-hydroxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.155 R950100 N2,N4-Bis[3-methylsulfonylamino)phenyl]-5-fluoro-2,4-pyrimidinediamine 7.3.156 R950108 N2,N4-Bis[3-(tert-butoxycarbonylamino)phenyl]-5-fluoro-2,4-pyrimidinediamine 7.3.157 R950120 N2,N4-Bis[4-(tert-butoxycarbonylamino)phenyl]-5-fluoro-2,4-pyrimidinediamine 7.3.158 R950170 N2,N4-Bis[2-[2-(methylamino)ethyleneaminocarbonyl]-benzofurane-5-yl]-5-fluoro-2,4- pyrimidinediamine 7.3.159 R950167 N2,N4-Bis[2-(2-hydroxyethyleneamoinocarbonyl)-benzofurane-5-yl]-5-fluoro-2,4-pyrimidinediamine 7.3.160 R950168 N2,N4-Bis[2-(2-aminoethyleneamoinocarbonyl)-benzofurane-5-yl]-5-fluoro-2,4-pyrimidinediamine 7.3.161 R950169 N2,N4-Bis[2-(2-(N-benzylamino)ethyleneamoinocarbonyl)-benzofurane-5-yl]-5-fluoro-2,4- pyrimidinediamine 7.3.162 R950172 N2,N4-Bis[2-(N-morpholinocarbonyl)benzofurane-5-yl]-5-fluoro-2,4-pyrimidinediamine 7.3.163 R950173 N2,N4-Bis[2-(2-N-morpholinoethyleneamoinocarbonyl)-benzofurane-5-yl]-5-fluoro-2,4- pyrimidinediamine 7.3.164 R950135 N2,N4-Bis(3-amino-4-nitrophenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.165 R950138 N2,N4-Bis(3-amino-2,4-difluorophenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.166 R950139 N2,N4-Bis(3-amino-4-ethoxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.167 R950134 N2,N4-Bis(3-amino-5-methoxycarbonylphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.168 R950140 N2,N4-Bis(3-amino-5-trifluoromethylphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.169 R950141 N2,N4-Bis(3-amino-5-chlorophenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.170 R950093 N2,N4-Bis(4-hydroxy-3-trifluoromethylphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.171 R950107 N2,N4-Bis(3-aminophenyl)-5-fluoro-2,4-pyrimidinediamine Hydrogen Chloride salt 7.3.172 R950121 N2,N4-Bis(4-aminophenyl)-5-fluoro-2,4-pyrimidinediamine Hydrogen Chloride Salt 7.3.173 R950109 N2,N4-Bis(3-aminophenyl)-2,4-pyrimidinediamine 7.3.174 R950131 N2,N4-Bis(3-amino-2,4-difluorophenyl)-2,4-pyrimidinediamine 7.3.175 R950142 N2,N4-Bis(3-amino-4-ethoxyphenyl)-2,4-pyrimidinediamine 7.3.176 R950132 N2,N4-Bis(3-amino-5-methoxycarbonylphenyl)-2,4-pyrimidinediamine 7.3.177 R950143 N2,N4-Bis(3-amino-5-trifluoromethylphenyl)-2,4-pyrimidinediamine 7.3.178 R950133 N2,N4-Bis(3-amino-5-chlorophenyl)-2,4-pyrimidinediamine 7.3.179 R950125 N2,N4-Bis[3-amino-4-(N-phenylamino)-phenyl]-5-fluoro-2,4-pyrimidinediamine 7.3.180 R950123 N2,N4-Bis[3-amino-4-(N-phenylamino)-phenyl]-2,4-pyrimidinediamine 7.3.181 R950157 N2,N4-Bis(5-amino-2-methylphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.182 R950158 N2,N4-Bis(5-amino-2-fluorophenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.183 R950159 N2,N4-Bis(3-amino-4-fluorophenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.184 R950146 N2,N4-Bis(2-methyl-5-nitrophenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.185 R950147 N2,N4-Bis(2-fluoro-5-nitrophenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.186 R950148 N2,N4-Bis(4-fluoro-3-nitrophenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.187 R950144 N2,N4-Bis(4-methyl-3-nitrophenyl)-5-fluoro-2,4-pyrimidinediamine (R950144) 7.3.188 R950149 N2,N4-Bis(4-chloro-3-nitrophenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.189 R950150 N2,N4-Bis(2-hydroxyethyleneamino-5-nitrophenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.190 R950151 N2,N4-Bis(2-methoxy-5-nitrophenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.191 R950152 N2,N4-Bis(4-fluoro-3-nitrophenyl)-2,4-pyrimidinediamine 7.3.192 R950153 N2,N4-Bis(4-methyl-3-nitrophenyl)-2,4-pyrimidinediamine 7.3.193 R950154 N2,N4-Bis(4-chloro-3-nitrophenyl)-2,4-pyrimidinediamine 7.3.194 R950155 N2,N4-Bis(2-hydroxy-5-nitrophenyl)-2,4-pyrimidinediamine 7.3.195 R950156 N2,N4-Bis(2-hydroxyethyleneamino-5-nitrophenyl)-2,4-pyrimidinediamine 7.3.196 R950166 N2,N4-Bis[3-(N-isopropyl)aminophenyl]-5-fluoro-2,4-pyrimidinediamine 7.3.197 R950171 N2,N4-Bis[3-N-(2-hydroxy-1-methylethyl)aminophenyl]-5-fluoro-2,4-pyrimidinediamine 7.3.198 R950177 N2,N4-Bis(3-tert-butoxycarbonylmethyleneaminophenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.199 R950178 N4-(3-Aminophenyl)-N2-(3-tert-butoxycarbonylmethyleneaminophenyl)-5-fluoro-2,4- pyrimidinediamine 7.3.200 R950179 N2-(3-Aminophenyl)-N4-(3-tert-butoxycarbonylmethyleneaminophenyl)-5-fluoro-2,4- pyrimidinediamine 7.3.201 R950184 N2,N4-Bis(3-ethoxycarbonylmethyleneaminophenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.202 R950183 N2,N4-Bis(3-ethoxycarbonylmethyleneaminophenyl)-N2-(ethoxycarbonylmethyl)-5-fluoro-2,4- pyrimidinediamine 7.3.203 R950180 N2-(3-Aminophenyl)-N4-(3-hydroxyethyleneaminophenyl)-5-fluoro-2,4-pyrimidinediamine and N4- (3-Aminophenyl)-N2-(3-hydroxyethyleneaminophenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.204 R950181 N2,N4-Bis(3-hydroxyethyleneaminophenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.205 R950174 N2,N4-Bis[3-(N-benzyloxyethyleneamino)phenyl]-5-fluoro-2,4-pyrimidinediamine 7.3.206 R950175 N2-(3-Aminophenyl)-N4-[3-(N-benzyloxyethyleneamino)phenyl]-5-fluoro-2,4-pyrimidinediamine 7.3.207 R950176 N4-(3-Aminophenyl)-N2-[3-(N-benzyloxyethyleneamino)phenyl]-5-fluoro-2,4-pyrimidinediamine 7.3.208 R926210 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.209 R925758 N2-(3,4-Ethylenedioxyphenyl)-5-fluoro-N4-[3-(hydroxymethyl)phenyl]-2,4-pyrimidinediamine 7.3.210 R925760 N2-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[4-(hydroxymethyl)phenyl]-2,4-pyrimidinediamine 7.3.211 R925765 N2-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-(2-hydroxy-2-phenylethyl)-2,4-pyrimidinediamine 7.3.212 R925766 N2-(3,4-Ethylendioxyphenyl)-5-fluoro-N4-[(2R)-hydroxy-(1S)-methyl-2-phenylethyl)-2,4- pyrimidinediamine 7.3.213 R925794 N4-Cyclohexyl-N2-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.214 R925795 N4-(4-Carboxycyclohexyl)-N2-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.215 R925796 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.216 R925823 N2-Allyl-N4-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.217 R926237 N4-(3,4-Ethylenedioxyphenyl)-N2-(4-ethylphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.218 R926690 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[2-(methoxycarbonyl)benzofuran-5-yl]-2,4- pyrimidinediamine 7.3.219 R926704 5-Fluoro-N2-(2-methoxycarbonylbenzofuran-5-yl)-N4-(4-isopropoxyphenyl)-2,4-pyrimidinediamine 7.3.220 R926376 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[4-(2-hydroxyethyl)oxyphenyl]-2,4-pyrimidinediamine 7.3.221 R909236 N2-[4-(2-N,N-Dimethylamino)ethoxyphenyl]-5-fluoro-N4-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.222 R909238 N2-(1,4-Benzoxazin-3-on-6-yl)-5-fluoro-N4-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.223 R909241 N2-(1,4-Benzoxazin-6-yl)-5-fluoro-N4-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.224 R909242 N4-(1,4-Benzoxazin-6-yl)-N2-[3-ethoxyocarbonylmethyleneoxyphenyl]-5-fluoro-2,4- pyrimidinediamine 7.3.225 R909243 N2-(1,4-Benzoxazin-6-yl)-5-fluoro-N4-(3-hydroxyphenyl)-2,4-pyrimidinediamineN4-(1,4- Benzoxazin-6-yl)-N2-(3,5-dimethoxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.226 R909245 N4-(1,4-Benzoxazin-6-yl)-N2-(3,5-dimethoxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.227 R909246 N4-(1,4-Benzoxazin-6-yl)-N2-(3-tert-butylphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.228 R909248 N4-(1,4-Benzoxazin-6-yl)-5-fluoro-N2-[4-(2-hydroxyethyl)oxyphenyl]-2,4-pyrimidinediamine 7.3.229 R909250 N2-(2,3-Dihydrobenzofuran-5-yl)-5-fluoro-N4-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.230 R909255 N4-(1,4-Benzoxazin-6-yl)-N2-(3-chloro-4-hydroxy-5-methylphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.231 R926706 5-Fluoro-N2-(2,3-dihydro-2-(methoxycarbonyl)benzofuran-5-yl)-N4-(4-isopropoxyphenyl)-2,4- pyrimidinediamine 7.3.232 R926699 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[4-[2-(N-morpholino)ethyleneoxy]phenyl]-2,4- pyrimidinediamine 7.3.233 R926709 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[4-[2-(N-morpholino)ethyleneoxy]phenyl]-2,4- pyrimidinediamine 7.3.234 R926710 5-Fluoro-N2-(3-hydroxyphenyl)-N4-[4-[2-(N-morpholino)ethyleneoxy]phenyl]-2,4- pyrimidinediamine 7.3.235 R926711 N2-(3,4-Ethylenedioxyphenyl)-5-fluoro-N4-[4-[2-(N-morpholino)ethyleneoxy]phenyl]-2,4- pyrimidinediamine 7.3.236 R926716 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[4-(tetrahydro-(1H)-pyrrol-1-ylsulfonyl)phenyl]-2,4- pyrimidinediamine 7.3.237 R926717 N2-[3-[4-(2-Chloro-6-fluorobenzyl)piperazino]propyl]-N4-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4- pyrimidinediamine 7.3.238 R926719 N2-(4-tert-Butylphenyl)-5-fluoro-N2-[2,3-dihydro-2-(methoxycarbonyl)benzofuran-5-yl]-2,4- pyrimidinediamine 7.3.239 R926721 N4-[(5-Chloro-1-benzothiophen-3-yl)methyl]-N2-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4- pyrimidinediamine 7.3.240 R926722 N4-[(5-Chloro-1-benzothiophen-3-yl)methyl]-5-fluoro-N2-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.241 R926723 N4-[2-[(2-Chloro-6-fluorobenzyl)thio]ethyl]-N2-(3,4-ethylenedioxy)-5-fluoro-2,4-pyrimidinediamine 7.3.242 R945168 N2-(2,3-Dihydro-1,4-benzodioxin-6-ylmethyl)-5-fluoro-N4-(3-hydroxyphenyl)-2,4- pyrimidinediamine 7.3.243 R926724 N4-[2-[(2-Chloro-6-fluorobenzyl)thio]ethyl]-5-fluoro-N2-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.244 R926743 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-(3-phenyl-5-methylisoxazol-4-yl)-2,4-pyrimidinediamine 7.3.245 R926744 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-(3,5-dimethylisoxazol-4-yl)-2,4-pyrimidinediamine 7.3.246 R926727 N2-[2-(Ethoxycarbonylmethylenethio)pyridin-5-yl]-N4-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4- pyrimidinediamine 7.3.247 R926740 N2-[2-(Ethoxycarbonylmethyleneoxy)pyridin-5-yl]-N4-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4- pyrimidinediamine 7.3.248 R925797 5-Bromo-N2-(3,4-ethylenedioxyphenyl)-N4-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.249 R925822 N2-Allyl-5-bromo-N4-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.250 R925820 5-Cyano-N2-(3,4-ethylenedioxyphenyl)-N4-(methoxycarbonylbenzyl)-2,4-pyrimidinediamine 7.3.251 R935172 N4-[4-[Ethoxycarbonyl(dimethyl)methyl]phenyl]-N2-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4- pyrimidinediamine 7.3.252 R935173 N2-(3,4-Ethylenedioxyphenyl)-5-fluoro-N4-[4-(2-hydroxy-1,1-dimethylethyl)phenyl]-2,4- pyrimidinediamine 7.3.253 R935182 5-Fluoro-N2-[4-(methoxycarbonylmethyleneoxy)phenyl]-N4-(3,4-propylenedioxyphenyl)-2,4- pyrimidinediamine 7.3.254 R935185 5-Fluoro-N2-[3-(methoxycarbonylmethyleneoxy)phenyl]-N4-(3,4-propylenedioxyphenyl)-2,4- pyrimidinediamine 7.3.255 R935187 N4-[3-(1-Bis(ethoxycarbonyl)ethoxy)phenyl]-5-fluoro-N2-[4-isopropoxyphenyl)-2,4- pyrimidinediamine 7.3.256 R935190 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-(indazolin-6-yl)-2,4-pyrimidinediamine. 7.3.257 R935191 5-Fluoro-N4-(3-hydroxyphenyl)-N2-(indazolin-6-yl)-2,4-pyrimidinediamine 7.3.258 R935193 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-(1-methyl-indazoline-5-yl)-2,4-pyrimidinediamine 7.3.259 R935194 5-Fluoro-N4-(3-hydroxyphenyl)-N2-(1-methy-indazoline-5-yl)-2,4-pyrimidinediamine 7.3.260 R935197 5-Fluoro-N2-(indazoline-5-yl)-N4-(4-isopropoxyphenyl)-2,4-pyrimidinediamine 7.3.261 R935198 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-(indazoline-5-yl)-2,4-pyrimidinediamine 7.3.262 R935199 5-Fluoro-N4-(3-hydroxyphenyl)-N2-(indazoline-5-yl)-2,4-pyrimidinediamine 7.3.263 R935203 5-Fluoro-N2-(4-isopropoxyphenyl)-N4-(1-methyl-indazoline-5-yl)-2,4-pyrimidinediamine 7.3.264 R935204 5-Fluoro-N2-(3-hydroxyphenyl)-N4-(1-methyl-indazoline-5-yl)-2,4-pyrimidinediamine 7.3.265 R935207 N4-(3,4-ethylenedioxyphenyl)-5-fluoro-N2-[3-(2-methoxycarbonyl-fur-4-yl)methyleneoxyphenyl]- 2,4-pyrimidinediamine 7.3.266 R935208 N4-(3,4-ethylenedioxyphenyl)-5-fluoro-N2-[1-(methoxycarbonyl)methyl-indazoline-6-yl]-2,4- pyrimidinediamine 7.3.267 R935209 5-Fluoro-N2-[4-(methoxycarbonylmethyleneoxy)phenyl]-N4-(1-methyl-indazoline-5-yl)-2,4- pyrimidinediamine 7.3.268 R935214 5-Fluoro-N2-(3,5-dimethoxyphenyl)-N4-(1-methyl-indazoline-5-yl)-2,4-pyrimidinediamine 7.3.269 R935215 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[1-(methoxycarbonyl)methyl-indazoline-6-yl]-2,4- pyrimidinediamine 7.3.270 R935218 5-Fluoro-N2-(4-isopropoxyphenyl)-N4-[1-(methoxycarbonyl)methyl-indazoline-6-yl]-2,4- pyrimidinediamine 7.3.271 R935219 N2-(3,4-Ethylenedioxyphenyl)-5-fluoro-N4-[1-(methoxycarbonyl)methyl-indazoline-6-yl]-2,4- pyrimidinediamine 7.3.272 R935220 5-Fluoro-N2-(3-hydroxyphenyl)-N4-[1-(methoxycarbonyl)methyl-indazoline-6-yl]-2,4- pyrimidinediamine 7.3.273 R950203 N4-(3,4-Ethylenedioxyphenyl)-N2-(3-furanylmethylene)-5-fluoro-2,4-pyrimidinediamine 7.3.274 R950204 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[(4-methoxyphenyloxy)ethyl]-2,4-pyrimidinediamine 7.3.275 R950205 N2-[2,3-Dihydrobenzo[b]furan-5-ylmethyl]-N4-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4- pyrimidinediamine 7.3.276 R950206 N2-(2,3-Dihydro-1,4-benzodioxin-2-ylmethyl)-N4-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4- pyrimidinediamine 7.3.277 R950201 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[2-(methylthio)-1,3-benzothiaz-6-yl]-2,4- pyrimidinediamine 7.3.278 R950213 N2-[2,3-Dihydrobenzo[b]furan-5-ylmethyl]-5-fluoro-N4-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.279 R950214 N2-(2,3-Dihydro-1,4-benzodioxin-2-ylmethyl)-5-fluoro-N4-(3-hydroxyphenyl)-2,4- pyrimidinediamine 7.3.280 R950212 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[2-(methylthio)-1,3-benzothiaz-6-yl)-2,4-pyrimidinediamine 7.3.281 R950227 N2-(3-Aminophenyl)-5-fluoro-N4-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.282 R950253 N2-(1,4-Benzoxazin-6-yl)]-5-fluoro-N4-(3-nitrophenyl)-2,4-pyrimidinediamine 7.3.283 R950215 N2-(Ethoxycarbonylmethyleneaminophenyl)-5-fluoro-N4-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.284 R950229 N2-(Ethoxycarbonylmethyleneaminophenyl)-5-fluoro-N4-[3-(2-hydroxyethylamino)phenyl]-2,4- pyrimidinediamine 7.3.285 R925821 5-Cyano-N2-(3-hydroxyphenyl)-N4-(methoxycarbonylbenzyl)-2,4-pyrimidinediamine 7.3.286 R926680 5-Fluoro-N4-[2-fluoro-4-(methoxymethyleneoxy)phenyl]-N2-(3-hydroxyphenyl)-2,4- pyrimidinediamine 7.3.287 R926748 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[(1H)-indol-5-yl]-2,4-pyrimidinediamine 7.3.288 R926749 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[(1H)-indol-5-yl]-2,4-pyrimidinediamine 7.3.289 R926750 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[(1H)-indol-6-yl]-2,4-pyrimidinediamine 7.3.290 R926751 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[(1H)-indol-6-yl]-2,4-pyrimidinediamine 7.3.291 R945063 N4-[4-(Aminocarbonylmethyleneoxy)phenyl]-5-fluoro-N2-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.292 R945071 N4-[4-(Cyanomethyleneoxy)phenyl]-5-fluoro-N2-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.293 R945109 N4-(3-Cyanophenyl)-5-fluoro-N2-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.294 R945110 N4-(3-Cyanophenyl)-5-fluoro-N2-(4-methoxycarbonylmethyleneoxyphenyl)-2,4-pyrimidinediamine 7.3.295 R945117 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[2-(indol-3-yl)ethyl]-2,4-pyrimidinediamine 7.3.296 R945118 5-Fluoro-N4-(3-hydroxyphenyl)-N2-(3-methoxycarbonylmethyleneoxyphenyl)-2,4- pyrimidinediamine 7.3.297 R945124 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-(3-methoxycarbonylmethyleneoxyphenyl)-2,4- pyrimidinediamine 7.3.298 R945125 5-Fluoro-N4-(4-isopropoxyphenyl)-N2-(3-methoxycarbonylmethyleneoxyphenyl)-2,4- pyrimidinediamine 7.3.299 R945064 N2-[4-(Aminocarbonylmethyleneoxy)phenyl]-5-fluoro-N4-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.300 R945132 5-Fluoro-N2-(3-hydroxyphenyl)-N4-[3-(5-methyl-1,2,4-oxadiazol-3-yl)methyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.301 R945133 N2-[4-(Aminocarbonylmethoxy)phenyl]-5-fluoro-N4-[3-(5-methyl-1,2,4-oxadiazol-3- yl)methyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.302 R945128 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[3-(5-methyl-1,2,4-oxadiazol-3-yl)methyleneoxyphenyl]- 2,4-pyrimidinediamine 7.3.303 R945129 5-Fluoro-N4-(4-isopropoxyphenyl)-N2-[3-(5-methyl-1,2,4-oxadiazol-3-yl)methyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.304 R945137 N2-(3,4-Ethylenedioxyphenyl)-5-fluoro-N4-[3-(5-methyl-1,2,4-oxadiazol-3-yl)methyleneoxyphenyl]- 2,4-pyrimidinediamine 7.3.305 R945138 5-Fluoro-N2-(4-isopropoxyphenyl)-N4-[3-(5-methyl-1,2,4-oxadiazol-3-yl)methyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.306 R945139 N4-(3,5-Dimethyl-4-hydroxyphenyl)-5-fluoro-N2-(3-methoxycarbonylmethyleneoxyphenyl)-2,4- pyrimidinediamine 7.3.307 R945146 N4-(Benzothiophen-3-ylmethyl)-5-fluoro-N2-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.308 R945147 5-Fluoro-N2-(3-hydroxyphenyl)-N4-(3-pyridylmethyl)-2,4-pyrimidinediamine 7.3.309 R945148 N4-(3-Chloro-4-hydroxy-5-methylphenyl)-5-fluoro-N2-(3-methoxycarbonylmethyleneoxyphenyl)- 2,4-pyrimidinediamine 7.3.310 R945151 N4-[(2,5-Dimethyl-3-furyl)methyl]-5-fluoro-N2-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.311 R945153 N4-(3,5-Dimethyl-4-methoxyphenyl)-5-fluoro-N2-(3-methoxycarbonylmethyleneoxyphenyl)-2,4- pyrimidinediamine 7.3.312 R945155 N4-[4-(N-Benzylpiperazino)phenyl]-N2-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.313 R945162 N2-[(2,5-Dimethyl-3-furyl)methyl]-5-fluoro-N4-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.314 R945163 N2-[4-(N-Benzylpiperazino)phenyl]-N4-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.315 R945164 N2-(Benzothiophen-3-ylmethyl)-5-fluoro-N4-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.316 R945165 5-Fluoro-N4-(3-hydroxyphenyl)-N2-(3-pyridylmethyl)-2,4-pyrimidinediamine 7.3.317 R945166 5-Fluoro-N4-(3-hydroxyphenyl)-N2-(2-pyridylmethyl)-2,4-pyrimidinediamine 7.3.318 R926802 N4-(3,5-Dimethoxyphenyl)-N2-(3-hydroxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.319 R926803 N4-(3,5-Dimethoxyphenyl)-N2-(2-ethoxycarbonylindol-7-yl)-5-fluoro-2,4-pyrimidinediamine 7.3.320 R926108 N2-(3,4-Dimethoxyphenyl)-N4-(4-ethoxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.321 R926146 N4-(4-Ethoxyphenyl)-N2-(3-hydroxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.322 R926213 N4-(4-Ethoxyphenyl)-N2-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.323 R926145 N4-(3,4-Dimethoxyphenyl)-N2-(4-ethoxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.324 R926147 N4-(3,4-Dimethoxyphenyl)-5-fluoro-N2-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.325 R926113 N2-(3,4-Dimethoxyphenyl)-5-fluoro-N4-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.326 R926395 N2-(4-Ethoxycarbonylmethyleneoxyphenyl)-5-fluoro-N4-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.327 R926396 5-Bromo-N2-(4-ethoxycarbonylmethyleneoxyphenyl)-N4-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.328 R926211 N2-(4-Ethoxyphenyl)-N4-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.329 R926212 N2-(3,4-Dimethoxyphenyl)-N4-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.330 R926218 N2-(3-Chloro-4-fluorophenyl)-N4-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.331 R926219 N2-(4-tert-Butylphenyl)-N4-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.332 R926220 N4-(3,4-Ethylenedioxyphenyl)-N2-(4-fluorophenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.333 R926221 N4-(3,4-Ethylenedioxyphenyl)-N2-(3-fluorophenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.334 R926229 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-(2-methoxyethyl)-2,4-pyrimidinediamine 7.3.335 R926230 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-(4-methoxybenzyl)-2,4-pyrimidinediamine 7.3.336 R926386 N2-(2,2-Difluorobenzodioxol-5-yl)-N4-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.337 R926476 N2-(2-Ethoxycarbonylindol-5-yl)-N4-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.338 R926480 N2-(4-Cyanomethyleneoxyphenyl)-N4-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.339 R926482 N2-(3-Ethoxycarbonylmethyleneoxyphenyl)-N4-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4- pyrimidinediamine 7.3.340 R925745 N2-(3-Ethoxycarbonylphenyl)-N4-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.341 R925746 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-(2-hydroxyethyl)-2,4-pyrimidinediamine 7.3.342 R925747 N2-(4-Ethoxycarbonylmethyleneoxyphenyl)-N4-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4- pyrimidinediamine 7.3.343 R940233 N2-(3-Chloro-4-hydroxy-5-methylphenyl)-5-fluoro-N4-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.344 R940235 N4-(3-Chloro-4-hydroxy-5-methylphenyl)-5-fluoro-N2-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.345 R940250 N2-(3-Chloro-4-hydroxy-5-methylphenyl)-5-fluoro-N4-[4-[3-(N-morpholinyl)propyl]oxyphenyl]- 2,4-pyrimidinediamineN2-(3,4-Dimethoxyphenyl)-5-fluoro-N4-[4-[3-(N- morpholinyl)propyl]oxyphenyl]-2,4-pyrimidinediamine 7.3.346 R940251 N2-(3-Chloro-4-hydroxy-5-methylphenyl)-5-fluoro-N4-[4-[3-(N-morpholinyl)propyl]oxyphenyl]- 2,4-pyrimidinediamine 7.3.347 R940253 N2-(3-Chloro-4-hydroxy-5-methylphenyl)-5-fluoro-N4-[4-[3-(N-morpholinyl)propyl]oxyphenyl]- 2,4-pyrimidinediamine 7.3.348 R940266 N2-(3-tert-Butylphenyl)-N4-(3-ethoxycarbonylmethyleneoxyphenyl)-5-fluoro-4-pyrimidinediamine 7.3.349 R940284 Mixture of 5-Fluoro-N4-(3-isopropylphenyl)-N2-(2-methoxycarbonylbenzofur-5-yl)-2,4- pyrimidinediamine and 5-fluoro-N2-(2-ethoxoxycarbonylbenzofur-5-yl)-N4-(3-isopropylphenyl)-2,4- pyrimidinediamine 7.3.350 R940281 N4-(3-tert-Butylphenyl)-5-fluoro-N2-(2-methoxycarbonylbenzofur-5-yl)-2,4-pyrimidinediamine 7.3.351 R940283 5-fluoro-N4-(3-isopropylphenyl)-N2-(2-methoxycarbonylbenzofur-5-yl)-2,4-pyrimidinediamine 7.3.352 R926786 N2-(1,1-Dihydroisobenzofuran-1-one-6-yl)-N4-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4- pyrimidinediamine 7.3.353 R926787 N2-[3-(3-Acetamidophenoxy)propyl]-N4-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.354 R926788 N2-[4-(4,5-Dichloro-1H-imidazol-1-yl)phenyl]-N4-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4- pyrimidinediamine 7.3.355 R926789 N2-(2,4-Dimethoxyphenyl)-N4-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.356 R926790 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-(4-isopropylphenyl)-2,4-pyrimidinediamine 7.3.357 R926791 N2-(3,5-Dimethoxyphenyl)-N4-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.358 R926792 N2-(2,5-Dimethyl-4-hydroxyphenyl)-N4-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.359 R926793 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-(5-methyl-3-phenyl-4-oxazolyl)-2,4-pyrimidinediamine 7.3.360 R926795 N4-(3,5-Dimethoxyphenyl)-N2-(3-ethoxycarbonylmethyleneoxyphenyl)-5-fluoro-2,4- pyrimidinediamine 7.3.361 R926797 N4-(3,4-Ethylenedioxyphenyl)-N2-(3-ethoxycarbonylmethyleneoxyphenyl)-5-ethoxycarbonyl-2,4- pyrimidinediamine 7.3.362 R926798 N4-(3-Hydroxyphenyl)-N2-(3-ethoxycarbonylmethyleneoxyphenyl)-5-ethoxycarbonyl-2,4- pyrimidinediamine 7.3.363 R926614 5-Fluoro-N4-(3-hydroxyphenyl)-N2-(2-methoxycarbonylbenzofuran-5-yl)-2,4-pyrimidinediamine 7.3.364 R926615 N2-(2-Ethoxycarbonylindol-5-yl)-5-fluoro-N4-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.365 R926777 N2-[4-(4,5-Dichloro-1H-imidazol-1-yl)phenyl]-5-fluoro-N4-(3-hydroxyphenyl)-2,4- pyrimidinediamine 7.3.366 R926778 5-Fluoro-N4-(3-hydroxyphenyl)-N2-(4-isopropylphenyl)-2,4-pyrimidinediamine 7.3.367 R926779 5-Fluoro N4-(3-hydroxyphenyl)-N2-(5-methyl-4-oxazolyl-2-phenyl)-2,4-pyrimidinediamine 7.3.368 R926780 N2-(3,5-Dimethoxyphenyl)-5-fluoro-N4-(3-hydroxyphenyl)-2,4-pyrimidinediamine (R926780) 7.3.369 R926572 N4-(4-tert-Butoxycarbonylmethyleneoxyphenyl)-5-fluoro-N2-(4- methoxycarbonylmethyleneoxyphenyl-2,4-pyrimidinediamine 7.3.370 R926487 5-Fluoro-N4-(3-isopropoxyphenyl)-N2-(2-methoxycarbonylbenzofuran-5-yl)-2,4-pyrimidinediamine 7.3.371 R926474 N4-(4-tert-Butylphenyl)-N2-(2-ethoxycarbonylindol-5-yl)-5-fluoro-2,4-pyrimidinediamine 7.3.372 R926477 N4-(4-tert-Butylphenyl)-5-fluoro-N2-(2-methoxycarbonylbenzofuran-5-yl)-2,4-pyrimidinediamine 7.3.373 R926485 N2-(3,4-Ethylenedioxyphenyl)-N4-(2-methoxycarbonylbenzofuran-5-yl)-5-fluoro-2,4- pyrimidinediamine 7.3.374 R926774 N4-(3-Ethoxycarbonylmethyleneoxyphenyl)-N2-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4- pyrimidinediamine 7.3.375 R926775 N4-(3-Ethoxycarbonylmethyleneoxyphenyl)-5-fluoro-N2-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.376 R945177 N4-(4-Aminocarbonylmethyleneoxyphenyl)-N2-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4- pyrimidinediamine 7.3.377 R935019 5-Fluoro-N2-(3-hydroxyphenyl)-N4-[di-(4-chlorophenyl)methyl]-2,4-pyrimidinediamine 7.3.378 R935020 N4-(Fluoren-9-yl)-5-fluoro-N2-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.379 R935021 (±)-5-Fluoro-N4-[1-(4-fluorophenyl)ethyl]-N2-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.380 R935023 (±)-5-Bromo-N4-[1-(4-fluorophenyl)ethyl]-N2-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.381 R935025 5-Bromo-N2-(3-hydroxyphenyl)-N4-(N-methyl-2-carbomethoxypyrrol-4-yl)-2,4-pyrimidinediamine 7.3.382 R935029 4-Amino-5-bromo-N2-(3-hydroxyphenyl)-2-pyrimidineamine 7.3.383 R935134 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[4-(3-phenyl-1,2,4-oxadiazol-5-yl)methyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.384 R935135 5-Fluoro-N4-(4-isopropoxyphenyl)-N2-[4-(3-phenyl-1,2,4-oxadiazol-5-yl)methyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.385 R935136 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[4-(3-phenyl-1,2,4-oxadiazol-5-yl)methyleneoxyphenyl]- 2,4-pyrimidinediamine 7.3.386 R935137 5-Fluoro-N4-(2-methoxycarbonylbenzofura-5-yl)-N2-[4-(3-phenyl-1,2,4-oxadiazol-5- yl)methyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.387 R935138 5-Fluoro-N2-(3-hydroxyphenyl)-N4-[4-(3-phenyl-1,2,4-oxadiazol-5-yl)methyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.388 R935139 5-Fluoro-N2-(4-isopropoxyphenyl)-N4-[4-(3-phenyl-1,2,4-oxadiazol-5-yl)methyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.389 R935140 N2-(3,4-Ethylenedioxyphenyl)-5-fluoro-N4-[4-(3-phenyl-1,2,4-oxadiazol-5-yl)methyleneoxyphenyl]- 2,4-pyrimidinediamine 7.3.390 R935141 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[4-(3-methyl-1,2,4-oxadiazol-5-yl)methyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.391 R935142 5-Fluoro-N4-(4-isopropoxyphenyl)-N2-[4-(3-methyl-1,2,4-oxadiazol-5-yl)methyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.392 R935143 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[4-(3-methyl-1,2,4-oxadiazol-5-yl)methyleneoxyphenyl]- 2,4-pyrimidinediamine 7.3.393 R935144 5-Fluoro-N2-(4-isopropoxyphenyl)-N4-[4-(3-methyl-1,2,4-oxadiazol-5-yl)methyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.394 R935145 N2-(3,4-Ethylenedioxyphenyl)-5-fluoro-N4-[4-(3-methyl-1,2,4-oxadiazol-5-yl)methyleneoxyphenyl]- 2,4-pyrimidinediamine 7.3.395 R935146 5-Fluoro-N2-(2-methoxycarbonylbenzofura-5-yl)-N4-[4-(3-methyl-1,2,4-oxadiazol-5- yl)methyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.396 R935147 5-Fluoro-N2-(3-hydroxyphenyl)-N4-[4-(3-methyl-1,2,4-oxadiazol-5-yl)methyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.397 R935148 N2-(3,4-Ethylenedioxyphenyl)-N4-[4-[(1-ethoxycarbonyl-1-methyl)ethyl]phenyl]-5-fluoro-2,4- pyrimidinediamine 7.3.398 R935150 N2-[4-[(1-Ethoxycarbonyl-1-methyl)ethyl]phenyl]-5-fluoro-N4-(4-isopropoxyphenyl)-2,4- pyrimidinediamine 7.3.399 R935179 N2-[4-(2,3-Dihydroxypropoxy)phenyl]-N4-(3,4-ethylenedioxypheny)-5-fluoro-2,4- pyrimidinediamine 7.3.400 R935180 N2-[4-(2,3-Dihydroxypropoxy)phenyl]-5-fluoro-N4-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.401 R935175 N2-[4-(2,3-Dihydroxypropoxy)phenyl]-5-fluoro-N4-(4-isopropoxyphenyl)-2,4-pyrimidinediamine 7.3.402 R935169 N4-[4-[(1-Ethoxycarbonyl-1-methyl)ethyl]phenyl]-5-fluoro-N2-(3-hydroxyphenyl)-2,4- pyrimidinediamine 7.3.403 R935164 5-Fluoro-N4-(4-isopropoxyphenyl)-N2-[(N-methyl-2-methoxycarbonyl)pyrrol-4-yl]-2,4- pyrimidinediamine 7.3.404 R935165 5-Fluoro-N2-(4-isopropoxyphenyl)-N4-[(N-methyl-2-carbomethoxy)pyrrole-4-yl]-2,4- pyrimidinediamine 7.3.405 R935166 N2-(3,4-Ethylenedioxyphenyl)-5-fluoro-N4-[(N-methyl-2-methoxycarbonyl)pyrrol-4-yl]-2,4- pyrimidinediamine 7.3.406 R935167 N4-[4-[(1-Ethoxycarbonyl-1-methyl)ethyl]phenyl]-5-fluoro-N2-(4-isopropoxyphenyl)-2,4- pyrimidinediamine 7.3.407 R935159 5-Fluoro-N4-(4-isopropoxyphenyl)-N2-(4-methoxycarbonylmethyleneoxyphenyl)-2,4- pyrimidinediamine 7.3.408 R935157 N4-[4-[(1-Ethoxycarbonyl-1-methyl)ethyl]phenyl]-5-fluoro-N2-(4- methoxycarbonylmethyleneoxyphenyl)-2,4-pyrimidinediamine 7.3.409 R935152 N2-[4-[(1-Ethoxycarbonyl-1-methyl)ethyl]phenyl]-5-fluoro-N4-(3-hydroxyphenyl)-2,4- pyrimidinediamine 7.3.410 R940257 N2-(3-tert-Butylphenyl)-5-fluoro-N4-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.411 R940258 Mixture of N4-(3-Chloro-4-hydroxy-5-methylphenyl)-5-fluoro-N2-(3- methoxycarbonylmethyleneoxyphenyl)-2,4-pyrimidinediamine and N4-(3-chloro-4-hydroxy-5- methylphenyl)-N2-(3-ethoxycarbonylmethyleneoxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.412 R940260 N2-(3-tert-Butylphenyl)-N4-(3,4-dimethoxyphenyl)-5-fluoro-2,4-pyrimidinediamine (R940260) 7.3.413 R940261 N2-[2-(N-Benzylpiperazino)ethyl]-5-fluoro-N4-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.414 R940262 N2-[2-(N-Benzylpiperazino)ethyl]-N4-(3,4-dimethoxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.415 R940263 N2-[4-(N-Benzylpiperidino)]-N4-(3,4-dimethoxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.416 R940264 N2-[4-(N-Benzylpiperidino)]-5-fluoro-N4-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.417 R940270 N4-(3-tert-Butylphenyl)-N2-(3-ethoxycarbonylmethyleneoxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.418 R940271 N4-(3-tert-Butylphenyl)-N2-(3-chloro-4-hydroxy-5-methylphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.419 R940275 N2-(3-tert-Butylcarbonylaminophenyl)-N4-(3-hydroxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.420 R940294 N4-(3,3-Dihydroisobenzofuranyl-1-one-6-yl)-5-fluoro-N2-(2-methoxycarbonylbenzofur-5-yl)-2,4- pyrimidinediamine 7.3.421 R940285 N2-[3-Ethoxycarbonylmethyleneoxyphenyl]-N4-(3,3-dihydroisobenzofuranyl-1-one-6-yl)-5-fluoro- 2,4-pyrimidinediamine 7.3.422 R926804 N2-(3,5-Dimethoxyphenyl)-N4-ethoxycarbonylmethyleneoxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.423 R926805 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-(3-trifluoromethylphenyl)]-2,4-pyrimidinediamine 7.3.424 R926808 N2-(2-Ethoxycarbonylindol-7-yl)-N4-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4-pyridinediamine 7.3.425 R926809 N4-[4-(4,5-Dichloro-1H-imidazol-1-yl)phenyl]-5-fluoro-N2-(3-ethoxycarbonylmethyleneoxyphenyl)- 2,4-pyrimidinediamine 7.3.426 R926813 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[3-(1,3-oxazol-5-yl)phenyl]-2,4-pyrimidinediamine 7.3.427 R926814 N2-(2-Ethoxycarbonylindol-7-yl)-5-fluoro-N4-(3-hydroxyphenyl)-2,4-pyridinediamine 7.3.428 R950207 N2-(3-Aminophenyl)-N4-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.429 R950186 N4-(3,4-Ethylenedioxyphenyl)-N2-(3-ethoxycarbonylmethyleneaminophenyl)-5-fluoro-2,4- pyrimidinediamine 7.3.430 R950185 N4-(3,5-Dichloro-4-hydroxyphenyl)-N2-(3-ethoxycarbonylmethyleneoxyphenyl)-5-fluoro-2,4- pyrimidinediamine 7.3.431 R950162 N4-(3-Aminophenyl)-5-fluoro-N2-(2-methoxycarbonylbenzofurane-5-yl)-2,4-pyrimidinediamine 7.3.432 R950163 N4-(3-Aminophenyl)-5-fluoro-N2-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.433 R950164 N4-(3-Aminophenyl)-5-fluoro-N2-(3-isopropoxyphenyl)-2,4-pyrimidinediamine 7.3.434 R950165 N4-(3-Aminophenyl)-5-fluoro-N2-(4-isopropoxyphenyl)-2,4-pyrimidinediamine 7.3.435 R950210 N2-(3-Furylmethylene)-5-fluoro-N4-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.436 R950211 5-Fluoro-N4-(3-hydroxyphenyl)-N2-(4-methoxyphenyloxyethyleneamino)-2,4-pyrimidinediamine 7.3.437 R950137 N4-(3-Aminophenyl)-N2-[[N3-[N4-(3-aminophenyl)]-5-fluoro-2,4-pyrimidinediamine]aminophenyl]- 5-fluoro-2,4-pyrimidinediamine 7.3.438 R950208 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[3-(hydroxyethyleneamino)phenyl]-2,4- pyrimidinediamine 7.3.439 R950209 N2-[3-Bis(hydroxyethyl)aminophenyl]-N4-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4- pyrimidinediamine 7.3.440 R925858 6-Ethoxycarbonyl-N4-(ethoxycarbonylmethyl)-N2-(4-ethoxycarbonylmethyleneoxyphenyl)-5-nitro- 2,4-pyrimidinediamine 7.3.441 R925837 N4-Benzyloxy-5-ethoxycarbonyl-N2-(3,4-ethylenedioxyphenyl)-2,4-pyrimidinediamine 7.3.442 R925824 N4-Benzyloxy-5-ethoxycarbonyl-N2-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.443 R945025 N2,N4-Bis[4-(aminocarbonylmethyleneoxy)phenyl]-5-fluoro-2,4-pyrimidinediamine 7.3.444 R945032 N2,N4-Bis[4-(cyanomethyleneoxy)phenyl]-5-fluoro-2,4-pyrimidinediamine 7.3.445 R945033 N2,N4-Bis[4-(1H-1,2,3,4-tetrazol-5-yl)methyleneoxyphenyl]-5-fluoro-2,4-pyrimidinediamine 7.3.446 R945034 N2,N4-Bis(4-methoxycarbonylphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.447 R945035 N2,N4-Bis(3-methoxycarbonylphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.448 R945036 N2,N4-Bis(3-carboxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.449 R945037 N2,N4-Bis(4-carboxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.450 R926412 N2,N4-Bis(3-isopropylaminocarbonyloxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.451 R945040 N2,N4-Bis[4-(ethylaminocarbonylamino)phenyl]-5-fluoro-2,4-pyrimidinediamine 7.3.452 R945045 N2,N4-Bis[3-(ethylaminocarbonylamino)phenyl]-5-fluoro-2,4-pyrimidinediamine 7.3.453 R945043 N2,N4-Bis(4-hydroxy-3-methoxycarbonylphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.454 R945046 N2,N4-Bis[4-(2-methyl-1,2,3,4-tetrazol-5-yl)methyleneoxyphenyl]-5-fluoro-2,4-pyrimidinediamine 7.3.454 R945047 5-Fluoro-N2,N4-[4-(1-methyl-1,2,3,4-tetrazol-5-yl)methyleneoxyphenyl],[4-(2-methyl-1,2,3,4- tetrazol-5-yl)methyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.454 R945048 N2,N4-Bis[4-(1-methyl-1,2,3,4-tetrazol-5-yl)methyleneoxyphenyl]-5-fluoro-2,4-pyrimidinediamine 7.3.455 R945052 N4-(4-Aminocarbonylmethyleneoxyphenyl)-5-fluoro-N2-(4-methoxycarbonylmethyleneoxyphenyl)- 2,4-pyrimidinediamine 7.3.456 R945053 N4-(4-Cyanomethyleneoxyphenyl])5-fluoro-N2-(4-methoxycarbonylmethyleneoxyphenyl)-2,4- pyrimidinediamine 7.3.457 R945056 N2,N4-Bis[3-hydroxy-4-(methoxycarbonyl)phenyl]-5-fluoro-2,4-pyrimidinediamine 7.3.458 R945060 N2-(4-Aminocarbonylmethyleneoxyphenyl)-5-fluoro-N4-(4-methoxycarbonylmethyleneoxyphenyl)- 2,4-pyrimidinediamine 7.3.459 R945061 N2,N4-Bis(3-hydroxy-4-carboxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.460 R945062 N2-(4-Cyanomethyleneoxyphenyl)-5-fluoro-N4-(4-methoxycarbonylmethyleneoxyphenyl)-2,4- pyrimidinediamine 7.3.461 R945065 N2,N4-Bis(3-methoxy-4-methoxycarbonylphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.462 R945066 N2,N4-Bis(4-methoxy-3-methoxycarbonylphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.463 R945067 N2,N4-Bis(3-carboxy-4-methoxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.464 R945068 N2,N4-Bis(4-carboxy-3-methoxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.465 R945070 N2-(4-Cyanomethyleneoxyphenyl)-5-fluoro-N4-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.466 R945172 N4-(4-Cyanomethyleneoxyphenyl)-N2-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.467 R945096 N2,N4-Bis[4-[2-methoxyimino(amino)ethyleneoxy]phenyl]-5-fluoro-2,4-pyrimidinediamine 7.3.468 R945097 N2-(4-Carboxymethyleneoxyphenyl)-N4-(4-cyanomethyleneoxyphenyl)-5-fluoro-2,4- pyrimidinediamine 7.3.469 R945127 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[3-(5-methyl-1,2,4-oxadiazol-3-yl)methyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.470 R945130 5-Fluoro-N2-(3-hydroxyphenyl)-N4-[3-(3-methyl-1,2,4-oxadiazol-5-yl)methyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.471 R945131 5-Fluoro-N4-(2-methoxycarbonylbenzofuran-5-yl)-N2-[3-(5-methyl-1,2,4-oxadiazol-3- yl)methyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.472 R945134 N4-(2-Carboxybenzofuran-5-yl)-5-fluoro-N2-[3-(5-methyl-1,2,4-oxadiazol-3- yl)methyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.473 R945135 N4-(2-Aminocarbonylbenzofuran-5-yl)-5-fluoro-N2-[3-(5-methyl-1,2,4-oxadiazol-3- yl)methyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.474 R945167 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[4-(2-methoxyimino(amino)ethyleneoxy)phenyl]-2,4- pyrimidinediamine 7.3.475 R945175 N2-(3,4-Ethylenedioxyphenyl)-5-fluoro-N4-[4-methoxyimino(amino)ethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.476 R926495 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.477 R921219 N4-(1,4-Benzoxazin-6-yl)-5-fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.478 R909239 N4-(3,4-Ethylendioxyphenyl)-5-fluoro-N2-[4-(N-2- hydroxyethylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.479 R909240 N4-(3,4-Ethylendioxyphenyl)-5-fluoro-[4-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.480 R909251 N4-(1,4-Benzoxazin-6-yl)-5-fluoro-N2-[3-(N-2-hydroxypropylamino)carbonylmethyleneoxyphenyl]- 2,4-pyrimidinediamine 7.3.481 R909252 N4-(1,4-Benzoxazin-6-yl)-5-fluoro-N2-[3-(N-3-hydroxypropylamino)carbonylmethyleneoxyphenyl]- 2,4-pyrimidinediamine 7.3.482 R909254 N4-(1,4-Benzoxazin-6-yl)-N2-[3-(N-isopropylamino)carbonylmethyleneoxyphenyl]-5-fluoro-2,4- pyrimidinediamine 7.3.483 R926703 5-Fluoro-N4-(4-isopropoxyphenyl)-N2-[2-(N-pyrrolidino)carbonylbenzofuran-5-yl]-2,4- pyrimidinediamine 7.3.484 R926708 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[4-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.485 R926494 N4-(4-tert-Butylphenyl)-5-fluoro-N2-[2-(N-methylamino)carbonylbenzofuran-5-yl]-2,4- pyrimidinediamine 7.3.486 R926712 N4-(4-tert-Butylphenyl)-5-fluoro-N2-[4-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.487 R940295 N4-(3-tert-Buthylpheny)-5-fluoro-N2-[3-(N-2-hydroxyethylamino)carbonylmethyleneoxyphenyl]- 2,4-pyrimidinediamine 7.3.488 R926562 N2,N4-Bis[4-(N-pyrrolidino)carbonylmethyleneoxyphenyl]-5-ethoxycarbonyl-2,4-pyrimidinediamine 7.3.489 R926563 N2,N4-Bis(4-N-pyrrolidinocarbonylmethyleneoxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.490 R940296 N4-(3-tert-Butylpheny)-N2-[3-(N-1,3-dihydroxypropyl-2-amino)carbonylmethyleneoxyphenyl]-5- fluoro-2,4-pyrimidinediamine 7.3.491 R940290 N2-[3-(N-2,3-Dihydroxypropylamino) carbonylmethyleneoxyphenyl]-5-fluoro-N4-(3-isopropylphenyl)-2,4-pyrimidinediamine 7.3.492 R940288 5-Fluoro-N4-(3-isopropylphenyl)-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.493 R926718 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[2-(N-dimethylamino)carbonylbenzofuran-5-yl]-2,4- pyrimidinediamine 7.3.494 R945149 N4-(3-Chloro-4-hydroxy-5-methylphenyl)-5-fluoro-N2-[3-(N- piperazino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.495 R926713 N4-(4-tert-Butylphenyl)-5-fluoro-N2-[2-(N-methylamino)carbonylbenzofuran-5-yl]-2,4- pyrimidinediamine 7.3.496 R926796 N4-(3,5-Dimethoxyphenyl)-5-fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.497 R926800 5-Ethoxycarbonyl-N4-(3,4-ethylenedioxyphenyl)-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.498 R926801 N4-(3,5-Dimethoxyphenyl)-5-ethoxycarbonyl-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]- 2,4-pyrimidinediamine 7.3.499 R926714 N4-(4-tert-Butylphenyl)-5-fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.500 R926742 N4-(3-Hydroxyphenyl)-5-trifluoromethyl-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.501 R926745 5-Fluoro-N4-[(1H)-indol-6-yl]-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.502 R945156 N4-(3,5-Dimethyl-4-methoxyphenyl)-5-fluoro-N2-[3-(N-piperazino)carbonylmethyleneoxyphenyl]- 2,4-pyrimidinediamine 7.3.503 R940291 N4-(3-tert-Butylphenyl)-5-fluoro-N2-[2-(N-methylamino)carbonylbenzofur-5-yl]-2,4- pyrimidinediamine 7.3.504 R926505 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[3-(2-hydroxyethylamino)carbonylmethyleneoxyphenyl]- 2,4-pyrimidinediamine 7.3.505 R926746 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[3-(N-2,3-dihydroxypropylamino)carbonylmethyleneoxyphenyl]- 2,4-pyrimidinediamine 7.3.506 R926715 5-Fluoro-N2-[2-(2-hydroxy-1,1-dimethylethylamino)carbonylbenzofuran-5-yl]-N4-(3- hydroxyphenyl)-2,4-pyrimidinediamine 7.3.507 R926730 5-Fluoro-N4-(4-isopropoxyphenyl)-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.508 R945170 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[4-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.509 R926489 5-Fluoro-N4-(3-isopropoxyphenyl)-N2-[2-(N-morpholino)carbonylbenzofuran-5-yl]-2,4- pyrimidinediamine 7.3.510 R926772 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[3-(N-piperazino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.511 R926506 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[3-(N-2-hydroxyethylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.512 R926508 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.513 R926732 5-Fluoro-N4-[3,4-(1,1,2,2-tetrafluoroethylendioxy)phenyl]-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.514 R940254 N4-(3,5-Dimethyl-4-hydroxyphenyl)-5-fluoro-N2-[3-(N-morpholino)carbonylmethyleneoxyphenyl]- 2,4-pyrimidinediamine 7.3.515 R940276 N4-(3-tert-Butylphenyl)-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-5-fluoro-2,4- pyrimidinediamine 7.3.516 R940277 N4-(3-tert-Butylphenyl)-N2-[3-(N-2,3-dihydroxypropylamino)carbonylmethyleneoxyphenyl]-5- fluoro-2,4-pyrimidinediamine 7.3.517 R940293 N4-(3,3-Dihydroisobenzofuran-1-one-6-yl)-N2-[3-(N-2,3- dihydroxypropylamino)carbonylmethyleneoxyphenyl]-5-fluoro-2,4-pyrimidinediamine 7.3.518 R926733 N4-(3,4-Dimethoxyphenyl)-5-fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.519 R926734 N2-[3-(N-2,3-Dihydroxypropylamino) carbonylmethyleneoxyphenyl]-N4-(3,4-dimethoxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.520 R926738 5-Fluoro-N4-(3-methoxyphenyl)-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.521 R926739 N2-[3-(N-2,3-Dihydroxypropylamino) carbonylmethyleneoxyphenyl]-5-fluoro-N4-(3-methoxyphenyl)-2,4-pyrimidinediamine 7.3.522 R945140 N4-(3,5-Dimethyl-4-hydroxyphenyl)-5-fluoro-N2-[3-(N-piperazino)carbonylmethyleneoxyphenyl]- 2,4-pyrimidinediamine 7.3.523 R926488 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[2-(N-morpholino)carbonylbenzofuran-5-yl]-2,4- pyrimidinediamine 7.3.524 R926493 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[2-(N-methylamino)carbonylbenzofuran-5-yl]-2,4- pyrimidinediamine 7.3.525 R926497 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[2-(N-2-hydroxyethylamino)carbonylbenzofuran-5-yl]-2,4- pyrimidinediamine 7.3.526 R926500 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[2-(N-piperazino)carbonylbenzofuran-5-yl]-2,4- pyrimidinediamine 7.3.527 R925844 5-Cyano-N4-(3-hydroxyphenyl)-N2-[4-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.528 R925845 5-Cyano-N4-[4-(N-cyclopropylmethylamino)carbonylmethyleneoxyphenyl]-N2-(3-hydroxyphenyl)- 2,4-pyrimidinediamine 7.3.529 R925846 5-Cyano-N4-(3-hydroxyphenyl)-N2-[4-(N-2,3-dihydroxypropylamino)carbonylmethyleneoxyphenyl]- 2,4-pyrimidinediamine 7.3.530 No Rigel 5-Fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-N4-(3-trifluoromethylphenyl)-2,4- Number pyrimidinediamine 7.3.531 R926812 N4-[4-(4,5-Dichloro-1H-imidazol-1-ylphenyl)]-5-fluoro-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.532 R926815 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[2-(N-methylaminocarbonyllindol-7-yl)-2,4- pyridinediamine 7.3.533 R926484 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[3-(N-morpholino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.534 R926492 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[2-(N-morpholino)carbonylbenzofuran-5-yl]-2,4- pyrimidinediamine 7.3.535 R926496 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[2-(N-methylamino)carbonylbenzofuran-5-yl]-2,4- pyrimidinediamine 7.3.536 R926498 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[2-(N-2-hydroxyethylamino)carbonylbenzofuran-5-yl]- 2,4-pyrimidinediamine 7.3.537 R926503 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[3-(N-piperazino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.538 R926764 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[3-(N-2-hydroxy-1,1- dimethylethylamino)carboxymethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.539 R926765 N2-[3-(N-Cyclohexylamino)carbonylmethyleneoxyphenyl]-N4-(3,4-ethylenedioxyphenyl)-5-fluoro- 2,4-pyrimidinediamine 7.3.540 R926766 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[3-[N-methyl-N-(2- hydroxyethyl)amino]carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.541 R926767 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[2-(N-homopiperazino)carbonylbenzofuran-5-yl]-2,4- pyrimidinediamine 7.3.542 R925755 N4-(3,4-Ethylenedioxyphenyl)-N2-[3-(N,N-dimethylamino)carbonylmethyleneoxyphenyl]-5-fluoro- 2,4-pyrimidinediamine 7.3.543 R926781 N2-[3-[N,N-Bis-(2-hydroxyethylamino)] carbonylmethyleneoxyphenyl]-N4-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.544 R926782 N2-[3-(N-2,3-Dihydroxypropylamino) carbonylmethyleneoxyphenyl]-N4-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.545 R926783 N2-[2-(N-2,3-Dihydroxypropylamino)carbonylbenzofuran-5-yl]-N4-(3,4-ethylenedioxyphenyl)-5- fluoro-2,4-pyrimidinediamine 7.3.546 R926784 N2-[3-(N-1,3-Dihydroxy-2-propylamino) carbonylmethyleneoxyphenyl]-N4-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.547 R926785 N2-[2-(N-1,3-Dihydroxy-2-propylamino)carbonylbenzofuran-5-yl]-N4-(3,4-ethylenedioxyphenyl)-5- fluoro-2,4-pyrimidinediamine 7.3.548 R940265 N4-(3-Chloro-4-hydroxy-5-methylphenyl)-5-fluoro-N2-[3-(N- morpholino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.549 R950187 N4-(3,5-Dichloro-4-hydroxyphenyl)-5-fluoro-N2-[3-(N-morpholino)carbonylmethyleneoxyphenyl]- 2,4-pyrimidinediamine 7.3.550 R950188 N4-(3,5-Dichloro-4-hydroxyphenyl)-5-fluoro-N2-[3-(N-piperazino)carbonylmethyleneoxyphenyl]- 2,4-pyrimidinediamine 7.3.551 R926776 N2-(3,4-Ethylenedioxyphenyl)-5-fluoro-N4-[3-(N-methylamino)carbonylmethyeleneoxyphenyl]-2,4- pyrimidinediamine 7.3.552 R945173 N2-(3,4-Ethylenedioxyphenyl)-5-fluoro-N4-(4-methylaminocarbonylmethyleneoxyphenyl)-2,4- pyrimidinediamine 7.3.553 R909253 N2-[4-(2-N,N-Dimethylaminoethyl)oxyphenyl]-5-fluoro-N4-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.554 R909247 N2-(1,4-Benzoxazin-6-yl)-5-fluoro-N4-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.555 R909249 N2-(4-Dihydrobenzofuranyl)-5-fluoro-N4-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.556 R940267 N2-(3-tert-Butylphenyl)-N4-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-5-fluoro-2,4- pyrimidinediamine 7.3.557 R926491 N2-(3,4-Ethylenedioxyphenyl)-5-fluoro-N4-[2-(N-methylamino)carbonylbenzofuran-5-yl]-2,4- pyrimidinediamine 7.3.558 R926491 N2-(3,4-Ethylenedioxyphenyl)-5-fluoro-N4-[2-(N-methylamino)carbonylbenzofuran-5-yl]-2,4- pyrimidinediamine 7.3.559 R926810 N2-(3,5-Dimethoxyphenyl)-N4-[3-(N-methylamino)carbonylmethyleneoxyphenyl)-5-fluoro-2,4- pyrimidinediamine 7.3.560 R925851 5-Bromo-N2-(3,4-ethylenedioxyphenyl)-N4-[4-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.561 R926741 N2-(3-Hydroxyphenyl)-5-trifluoromethyl-N4-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.562 R925860 N2,N4-Bis[4-(N-n-butylamino)carbonylmethyleneoxyphenyl]-5-cyano-2,4-pyrimidinediamine 7.3.563 R925861 N2,N4-Bis[4-(N-isopropylamino)carbonylmethyleneoxyphenyl]-5-cyano-2,4-pyrimidinediamine 7.3.564 R925853 N2,N4-Bis[4-(N-n-propylamino)carbonylmethyleneoxyphenyl]-5-cyano-2,4-pyrimidinediamine 7.3.565 R925854 N2,N4-Bis[4-(N-morphonlino)carbonylmethyleneoxyphenyl]-5-cyano-2,4-pyrimidinediamine 7.3.566 R925855 N2,N4-Bis[4-(N-piperidino)carbonylmethyleneoxyphenyl]-5-cyano-2,4-pyrimidinediamine 7.3.567 R925859 N2,N4-Bis[4-(N-cyclopropylmethylamino)carbonylmethyleneoxyphenyl]-5-cyano-2,4- pyrimidinediamine 7.3.568 R950254 N4-(3-Aminophenyl)-N2-(1,4-benzoxazin-6-yl)-5-fluoro-2,4-pyrimidinediamine 7.3.569 R950200 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[3-(N-2- morpholinoethyleneamino)carbonylmethyleneaminophenyl]-2,4-pyrimidinediamine 7.3.570 R950191 N4-(3,4-Ethylenedioxyphenyl)-N2-[3-N-methylamino)carbonylmethyleneaminophenyl]-5-fluoro-2,4- pyrimidinediamine 7.3.571 R950192 N2-[3-(N-Amino)carbonylmethyleneaminophenyl]-N4-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4- pyrimidinediamine 7.3.572 R950193 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[3-(N-morpholino)carbonylmethyleneaminophenyl]-2,4- pyrimidinediamine 7.3.573 R950194 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[3-(N-(N-methyl)- piperazino)carbonylmethyleneaminophenyl]-2,4-pyrimidinediamine 7.3.574 R950195 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[3-(N-2- hydroxyethyleneamino)carbonylmethyleneaminophenyl]-5-fluoro-2,4-pyrimidinediamine 7.3.575 R950196 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[3-(N- methylamino)ethyleneaminocarbonylmethyleneaminophenyl]-2,4-pyrimidinediamine 7.3.576 R950197 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[3-(N-piperazino)carbonylmethyleneaminophenyl]-5- fluoro-2,4-pyrimidinediamine 7.3.577 R950198 N2-[3-(N-Benzylamino)ethyleneaminocarbonylmethyleneaminophenyl]-N4-(3,4- ethylenedioxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.578 R950199 N2-[3-(N,N′-Bis(2-N-hydroxyethyl)amino)carbonylmethyleneaminophenyl]-N4-(3,4- ethylenedioxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.579 R950217 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[3-(N-methylamino)carbonylmethyleneaminophenyl]-2,4- pyrimidinediamine 7.3.580 R950219 N2-(3-Aminocarbonylmethyleneaminophenyl)-5-fluoro-N4-(3-hydroxyphenyl)-2,4- pyrimidinediamine 7.3.581 R950220 N2-[3-(N,N-Dimethylamino)carbonylmethyleneaminophenyl]-5-fluoro-N4-(3-hydroxyphenyl)-2,4- pyrimidinediamine 7.3.582 R950221 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[3-(N-morpholino)carbonylmethyleneaminophenyl]-2,4- pyrimidinediamine 7.3.583 R950222 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[3-(N-piperazino)carbonylmethyleneaminophenyl]-2,4- pyrimidinediamine 7.3.584 R950223 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[3-[N-(N-methyl)piperazino]carbonylmethyleneaminophenyl]- 2,4-pyrimidinediamine 7.3.585 R950224 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[3-(N-2-hydroxyethylamino)carbonylmethyleneaminophenyl]- 2,4-pyrimidinediamine 7.3.586 R950225 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[3-[(N- methylamino)ethylamino]carbonylmethyleneaminophenyl]-2,4-pyrimidinediamine 7.3.587 R950226 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[3-[(N-2- morpholinoethylamino)carbonylmethyleneaminophenyl]-2,4-pyrimidinediamine 7.3.588 R935184 5-Fluoro-N2-[4-(N-methylamino)carbonylmethyleneoxyphenyl]-N4-(3,4-propylenedioxyphenyl)-2,4- pyrimidinediamine 7.3.589 R935196 N2-[3-(1-Bis(N-methylaminocarbonyl)ethoxy)phenyl]-5-fluoro-N4-(4-isopropoxyphenyl)-2,4- pyrimidineamine 7.3.590 R935202 5-Fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-N4-(3,4-propylenedioxyphenyl)-2,4- pyrimidinediamine 7.3.591 R935206 N2,N4-Bis[1-(N-methylaminocarbonyl)methyl-indazoline-6-yl]-5-fluoro-2,4-pyrimidinediamine 7.3.592 R935212 N4-(3,4-ethylenedioxyphenyl)-5-fluoro-N2-[1-(N-methylaminocarbonyl)methyl-indazoline-6-yl]-2,4- pyrimidinediamine 7.3.593 R935213 N4-(3,4-ethylenedioxyphenyl)-5-fluoro-N2-[3-(2-(N-methylamino)carbonyl-fur-4- yl)methyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.594 R935216 5-Fluoro-N2-[4-(N-methylamino)carbonylmethyleneoxyphenyl]-N4-(1-methyl-indazoline-5-yl)-2,4- pyrimidinediamine 7.3.595 R935217 N2,N4-Bis[1-(N-methylaminocarbonyl)methyl-indazoline-5-yl]-5-fluoro-2,4-pyrimidinediamine 7.3.596 R926486 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[3-[2-(N-morpholino)ethyleneoxy]phenyl]-2,4- pyrimidinediamine 7.3.597 R926490 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[2-(N-morpholinomethylene)benzofuran-5-yl]-2,4- pyrimidinediamine 7.3.598 R926510 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[3-[2-(N-methylamino)ethyleneoxy]phenyl]-2,4- pyrimidinediamine 7.3.599 R926770 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[2-(N-piperazinomethylene)benzofuran-5-yl]-2,4- pyrimidinediamine 7.3.600 R940255 N4-(3,5-Dimethyl-4-hydroxyphenyl)-5-fluoro-N2-[3-[2-(N-morpholino)ethyleneoxy]phenyl]-2,4- pyrimidinediamine 7.3.601 R945142 N4-(3,5-Dimethyl-4-hydroxyphenyl)-5-fluoro-N2-[3-[2-(N-piperazino)ethoxy]phenyl]-2,4- pyrimidinediamine bis Hydrogen Chloride Salt 7.3.602 R945144 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[4-(2-hydroxyethyloxy)phenyl]-2,4-pyrimidinediamine 7.3.603 R945150 N4-(3-Chloro-4-hydroxy-5-methylphenyl)-5-fluoro-N2-[3-[2-(N-piperazino)ethoxy]phenyl]-2,4- pyrimidinediamine Dihydrochloride Salt 7.3.604 R945157 N4-(3,5-Dimethyl-4-methoxyphenyl)-5-fluoro-N2-[3-[2-(N-piperazino)ethoxy]phenyl]-2,4- pyrimidinediamine Dihydrochloride Salt 7.3.605 R926501 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[2-(N-piperazino)carbonylbenzofuran-5-yl]-2,4- pyrimidinediamine Hydrogen Chloride Salt 7.3.606 R926504 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[3-(N-piperazino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine Hydrogen Chloride Salt 7.3.607 R926509 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[3-(2-N-methylaminoethyl)phenyl]-2,4- pyrimidinediamine Hydrogen Chloride Salt 7.3.608 R926511 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[3-[2-(N-morpholino)ethyloxy]phenyl]-2,4- pyrimidinediamine Hydrogen Chloride Salt 7.3.609 R926768 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[2-(N-homopiperazino)carbonylbenzofuran-5-yl]-2,4- pyrimidinediamine Hydrogen Chloride Salt 7.3.610 R926502 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[2-(N-piperazino)carbonylbenzofuran-5-yl]-2,4- pyrimidinediamine Hydrogen Chloride Salt 7.3.611 R926769 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[2-(N-piperazinomethylene)benzofuran-5-yl]-2,4- pyrimidinediamine Dihydrochloride Salt 7.3.612 R926773 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[3-(N-piperazino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine Hydrogen Chloride Salt 7.3.613 R926771 N2-[3-[2-(N,N-Dimethylamino)ethyloxy]phenyl]-N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-2,4- pyrimidinediamine Hydrogen Chloride Salt 7.3.614 R940256 N4-(3,5-Dimethyl-4-hydroxyphenyl)-5-fluoro-N2-[3-[2-(N-morpholino)ethyloxy]phenyl]-2,4- pyrimidinediamine Hydrogen Chloride Salt 7.3.615 R940269 N4-(3-Chloro-4-hydroxy-5-methylphenyl)-5-fluoro-N2-[3-[2-(N-morpholino)ethyloxy]phenyl]-2,4- pyrimidinediamine Hydrogen Chloride Salt 7.3.616 R926816 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine Hydrogen Chloride Salt 7.3.617 R926696 N4-(3,4-Ethylenedioxy)-5-fluoro-N2-[2-(hydroxymethyl)benzofuran-5-yl]-2,4-pyrimidinediamine 7.3.618 R926700 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[2-(hydroxymethyl)-(1H)-indol-5-yl]-2,4-pyrimidinediamine 7.3.619 R926705 5-Fluoro-N2-[2-(hydroxymethyl)benzofuran-5-yl]-N4-[4-(isopropoxy)phenyl]-2,4-pyrimidinediamine 7.3.620 R926707 5-Fluoro-N2-[2-(hydroxymethyl)benzofuran-5-yl]-N4-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.621 R926728 N4-(4-tert-Butyl)phenyl)-5-fluoro-N2-[3-(2-hydroxyethyleneoxy)phenyl]-2,4-pyrimidinediamine 7.3.622 R926735 5-(Hydroxymethyl)-N2-[3-(2-hydroxyethyleneoxy)phenyl]-N4-(3-hydroxyphenyl)-2,4- pyrimidinediamine 7.3.623 R940287 N4-(3-tert-Butylphenyl)-5-fluoro-N2-[(2-hydroxymethylene)benzofur-5-yl]-2,4-pyrimidinediamine 7.3.624 R940287 5-Fluoro-N4-(3-isopropylphenyl)-N2-[(2-hydroxymethylene]benzofur-5-yl]-2,4-pyrimidinediamine 7.3.625 R940286 5-Fluoro-N4-(3-isopropylphenyl)-N2-[(2-hydroxymethylene]benzofur-5-yl]-2,4-pyrimidinediamine 7.3.626 R940282 N4-(3-tert-Butylphenyl)-5-fluoro-N2-[3-hydroxyethyleneoxy)phenyl]-2,4-pyrimidinediamine 7.3.627 R940292 N4-[3,4-Bis(hydroxymethyl)phenyl]-5-fluoro-N2-[3-(2-hydroxyethyleneoxy)phenyl]-2,4- pyrimidinediamine 7.3.628 R935149 N2-(3,4-Ethylenedioxyphenyl)-N4-[4-(2-hydroxy-1,1-dimethylethyl)phenyl]-5-fluoro-2,4- pyrimidinediamine 7.3.629 R935151 5-Fluoro-N2-[4-(2-hydroxy-1,1-dimethylethyl)phenyl]-N4-(4-isopropoxyphenyl)-2,4- pyrimidinediamine 7.3.630 R935153 5-Fluoro-N2-[4-(2-hydroxy-1,1-dimethylethyl)phenyl]-N4-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.631 R935154 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[3-(2-hydroxyethoxy)phenyl]-2,4-pyrimidinediamine 7.3.632 R935155 5-Fluoro-N2-[4-(2-hydroxyethoxy)phenyl]-N4-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.633 R935156 5-Fluoro-N2-[3-(2-hydroxyethoxy)phenyl]-N4-(4-isopropoxyphenyl)-2,4-pyrimidinediamine 7.3.634 R935158 5-Fluoro-N4-[4-(2-hydroxy-1,1-dimethylethyl)phenyl]-N2-[4-(2-hydroxyethoxy)phenyl]-2,4- pyrimidinediamine 7.3.635 R935160 5-Fluoro-N2-[4-(2-hydroxyethoxy)phenyl]-N4-(4-isopropoxyphenyl)-2,4-pyrimidinediamine 7.3.636 R935161 5-Fluoro-N4-[4-(2-hydroxy-1,1-dimethylethyl)phenyl]-N2-[3-(2-hydroxyethoxy)phenyl]-2,4- pyrimidinediamine 7.3.637 R935168 5-Fluoro-N4-[4-(2-hydroxy-1,1-dimethylethyl)phenyl]-N2-(4-isopropoxyphenyl)-2,4- pyrimidinediamine 7.3.638 R935170 5-Fluoro-N4-[3-(2-hydroxyethoxy)phenyl]-N2-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.639 R935171 5-Fluoro-N2-[4-(2-hydroxy-1,1-dimethylethyl)phenyl]-N4-(3-hydroxyphenyl)--2,4- pyrimidinediamine 7.3.640 R935174 5-Fluoro-N2-[4-(2-hydroxyethoxy)phenyl]-N4-(2-hydroxymethylbenzofur-5-yl)-2,4- pyrimidinediamine 7.3.641 R935176 N2-(3,4-Ethylenedioxyphenyl)-5-fluoro-N4-[3-(2-hydroxyethoxy)phenyl]-2,4-pyrimidinediamine 7.3.642 R935177 5-Fluoro-N2-[4-(2-hydroxy-1,1,dimethylethyl)phenyl]-N4-(2-hydroxymethylbenzofur-5-yl)-2,4- pyrimidinediamine 7.3.643 R935178 5-Fluoro-N2-[3-(2-hydroxyethyloxy)phenyl]-N4-(2-hydroxymethylbenzofur-5-yl)-2,4- pyrimidinediamine 7.3.644 R935181 N4-(3,5-Dimethoxyphenyl)-5-fluoro-N2-[3-(2-hydroxyethoxy)phenyl]-2,4-pyrimidinediamine 7.3.645 R935183 5-Fluoro-N2-[4-(2-hydroxyethoxy)phenyl]-N4-(3,4-propylenedioxyphenyl)-2,4-pyrimidinediamine 7.3.646 R935186 5-Fluoro-N2-[4-(2-hydroxyethoxy)phenyl]-N4-(3,4-propylenedioxyphenyl)-2,4-pyrimidinediamine 7.3.647 R926720 N4-(4-tert-Butylphenyl)-5-fluoro-N2-[2,3-dihydro-2-(carboxy)benzofuran-5-yl]-2,4- pyrimidinediamine 7.3.648 R926726 N4-(4-tert-Butylphenyl)-N2-(3-carboxymethyleneoxyphenyl)-5-fluor-2,4-pyrimidinediamine 7.3.649 R926731 5-Fluoro-N2-[3-(carboxymethyleneoxy)phenyl]-N4-[4-(isopropoxy)phenyl]-2,4-pyrimidinediamine 7.3.650 R926560 N2,N4-Bis(4-carboxymethyleneoxy)phenyl-5-fluoro-2,4-pyrimidinediamine 7.3.651 R926483 N2-(3-Carboxymethyleneoxyphenyl)-N4-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.652 R945126 N2-(3-Carboxymethyleneoxyphenyl)-5-fluoro-N4-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.653 R926238 N2-(4-Carboxymethyleneoxyphenyl)-N4-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.654 R926564 N2-(4-Carboxymethyleneoxyphenyl)-5-Fluoro-N4-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.655 R926478 N2-(2-Carboxybenzofuran-5-yl)-5-fluoro-N4-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.656 R926479 N2-(2-Carboxyindol-5-yl)-5-fluoro-N4-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.657 R926481 N4-(4-tert-Butylphenyl)-N2-(2-carboxybenzofuran-5-yl)-5-fluoro-2,4-pyrimidinediamine 7.3.658 R940280 N4-(3-tert-Butylphenyl)-N2-[3-carboxymethyleneoxyphenyl]-5-fluoro-2,4-pyrimidinediamine 7.3.659 R950190 N2-(3-Carboxymethyleneaminophenyl)-N4-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4- pyrimidinediamine 7.3.660 R950230 N2-(Carboxymethyleneaminophenyl)-5-fluoro-N4-[3-(2-hydroxyethyloxy)phenyl]-2,4- pyrimidinediamine 7.3.661 R950231 5-Fluoro-N4-[3-(2-hydroxyethylamino)phenyl]-N2-[3-[N-(2- hydroxyethylamino)]carbonylmethyleneaminophenyl]-2,4-pyrimidinediamine 7.3.662 R950232 N2-[3-(N-2-Aminoethylamino)carbonylmethyleneaminophenyl]-5-fluoro-N4-[3-(2- hydroxyethylenoxy)phenyl]-2,4-pyrimidinediamine 7.3.663 R950233 5-Fluoro-N4-[3-(2-hydroxyethylamino)phenyl]-N2-[3-(N- methylamino)carbonylmethyleneaminophenyl]-2,4-pyrimidinediamine 7.3.664 R950234 5-Fluoro-N4-[3-(2-hydroxyethylamino)phenyl]-N2-[3-[N-(2- methylamino)ethylamino]carbonylmethyleneaminophenyl]-2,4-pyrimidinediamine 7.3.665 R950235 N2-[3-[N-(2-N-Benzylamino)ethylamino]carbonylmethyleneaminophenyl]-5-fluoro-N4-[3-(2- hydroxyethylamino)phenyl]-2,4-pyrimidinediamine 7.3.666 R950236 5-Fluoro-N4-[3-(2-hydroxyethylamino)phenyl]-N2-[3-(N- morpholino)carbonylmethyleneaminophenyl]-2,4-pyrimidinediamine 7.3.667 R950237 N2-[3-(3-N,N-Dimethylaminopropyl) aminocarbonylmethyleneaminophenyl]-5-fluoro-N4-[3-(2-hydroxyethylamino)phenyl]-2,4- pyrimidinediamine 7.3.668 R950238 N2-[3-[N-(2,3-Dihydroxypropyl)amino]carbonylmethyleneaminophenyl]-5-fluoro-N4-[3-(2- hydroxyethylamino)phenyl]-2,4-pyrimidinediamine 7.3.669 R950239 5-Fluoro-N4-[3-(2-hydroxyethylamino)phenyl]-N2-[3-(N- morpholinoethyleneamino)carbonylmethyleneaminophenyl]-2,4-pyrimidinediamine 7.3.670 R926514 2,4-Bis[N-(L)-tyrosine methyl ester]-5-ethoxycarbonylpyrimidine 7.3.670 R926513 5-Ethoxycarbonyl-2-methoxy-4-[N-(L)-tyrosine methyl ester]pyrimidine 7.3.671 R926252 N2,N4-Bis(3,4-ethylenedioxyphenyl)-5-ethoxycarbonyl-2,4-pyrimidinediamine 7.3.672 R926253 N2,N4-Bis(4-methoxycarbonylmethyleneoxyphenyl)-5-ethoxycarbonyl-2,4-pyrimidinediamine 7.3.673 R926526 2,4-Bis[N-(L)-phenylalaninyl ethyl ester]-5-ethoxycarbonylpyrimidine 7.3.674 R926527 2,4-Bis[N-(L)-valinyl ethyl ester]-5-ethoxycarbonylpyrimidine 7.3.675 R926528 5-Ethoxycarbonyl-N2-(3-hydroxyphenyl)-4-[N-(L)-phenylalanine ethyl ester]-2-pyrimidineamine 7.3.676 R926536 N2-(3,4-Ethylenedioxyphenyl)-5-ethoxycarbonyl-4-[N-(L)-phenyl glycinyl ethyl ester)-2- pyrimidineamine 7.3.677 R926579 N4-(4-tert-Butoxycarbonylmethyleneoxyphenyl)-5-ethoxycarbonyl-N2-(4- methoxycarbonylmethyleneoxyphenyl)-2,4-pyrimidinediamine 7.3.678 R926580 N4-(4-tert-Butoxycarbonylmethyleneoxyphenyl)-N2-(4-methoxycarbonylmethyleneoxyphenyl)-5- methoxycarbonyl-2,4-pyrimidinediamine 7.3.679 R926583 N4-(4-Carboxymethyleneoxyphenyl)-5-ethoxycarbonyl-N2-(4- methoxycarbonylmethyleneoxyphenyl)-2,4-pyrimidinediamine 7.3.680 R926584 N2-(4-Carboxymethyleneoxyphenyl)-5-ethoxycarbonyl-N4-(4- methoxycarbonylmethyleneoxyphenyl)-2,4-pyrimidinediamine 7.3.681 R926535 5-Carboxy-N2-(3-hydroxyphenyl)-N4-[N-(L)-phenylglycine)-2-pyrimidineamine 7.3.682 R925856 5-Amino-6-ethoxycarbonyl-N2,N4-bis(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.683 R925857 5-Amino-6-ethoxycarbonyl-N2,N4-bis(3,4-ethylenedioxyphenyl)-2,4-pyrimidinediamine 7.3.684 R925865 5-Amino-N2,N4-bis(ethoxycarbonylmethyl)-6-ethoxycarbonyl-2,4-pyrimidinediamine 7.3.685 R926567 5-Amino-N2,N4-bis(4-ethoxycarbonylmethyleneoxyphenyl)-6-ethoxycarbonyl-2,4- pyrimidinediamine 7.3.686 R926571 N2,N4-Bis(4-ethoxycarbonylmethyleneoxyphenyl)-6-ethoxycarbonyl-5- (phenylaminocarbonylamino)-2,4-pyrimidinediamine 7.3.687 R926585 5-Allylaminocarbonylamino-N2,N4-bis(4-ethoxycarbonylmethyleneoxyphenyl)-6-ethoxycarbonyl)- 2,4-pyrimidinediamine 7.3.688 R926586 N2,N4-Bis(4-ethoxycarbonylmethyleneoxyphenyl)-6-ethoxycarbonyl-5-(ethoxycarbonylformyl)-2,4- 5-pyrimidinetriamine 7.3.689 R926587 N2,N4-Bis(4-ethoxycarbonylmethyleneoxyphenyl)-6-ethoxycarbonyl-5-(ethoxycarbonylmethylene aminocarbonylamino)-2,4-pyrimidinediamine 7.3.690 R926588 N2,N4-Bis(4-ethoxycarbonylmethyleneoxyphenyl)-6-ethoxycarbonyl-5- (cyclopentylaminocarbonylamino)-2,4-pyrimidinediamine 7.3.691 R926589 N2,N4-Bis(4-ethoxycarbonylmethyleneoxyphenyl)-6-ethoxycarbonyl-5- (chloroacetylaminocarbonylamino)-2,4-pyrimidinediamine 7.3.692 R920669 N2,N4-Bis(3,4-ethylenedioxyphenyl)-5-trifluoro-2,4-pyridinediamine 7.3.693 R920668 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-(3-pyridyl)-2,4-pyrimidinediamine 7.3.694 R920664 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-(4-n-hexyloxyphenyl)-2,4-pyrimidindiamine 7.3.695 R920666 N2-(4-n-Butyloxyphenyl)-N4-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4-pyridinediamine 7.3.696 R920670 N4-(4-ethyloxyphenyl)-N2-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.697 R920671 N4-(4-n-Butyloxyphenyl)-N2-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4-pyridinediamine 7.3.698 R920672 N4-(4-n-Hexyloxyphenyl)-N2-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4-pyridinediamine 7.3.699 R920818 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[4-(1,2,3,4-tetrazol-5-yl)methyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.700 R920819 N4-(3-Hydroxyphenyl)-N2-[4-(1H,1,2,3,4-tetrazol-5-yl)methyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.701 R920820 N4-(3-Hydroxyphenyl)-5-methyl-N2-[4-(1H,1,2,3,4-tetrazol-5-yl)methyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.702 [NEED R N4-(3-Benzyloxyphenyl)-N2-[4-(1-methyl-1,2,3,4-tetrazol-5-yl)methyleneoxyphenyl]-2,4- NO.] pyrimidineamine 7.3.703 R920917 N4-(3-hydroxyphenyl)-N2-[4-(1-methyl-1,2,3,4-tetrazol-5-yl)methyleneoxyphenyl]-2,4- pyrimidineamine 7.3.704 [NEED R N4-(3-Benzyloxyphenyl)-N2-[4-(2-methyl-1,2,3,4-tetrazol-5-yl)methyleneoxyphenyl]-2,4- NO.] pyrimidineamine 7.3.705 R920910 N4-(3-Hydroxyphenyl)-N2-[4-(2-methyl-1,2,3,4-tetrazol-5-yl)methyleneoxyphenyl]-2,4- pyrimidineamine 7.3.706 R920861 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[4-(1-methyl-1,2,3,4-tetrazol-5-yl)methyleneoxyphenyl]-2,4- pyrimidineamine 7.3.707 R920860 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[4-(1-methyl-1,2,3,4-tetrazol-5-yl)methyleneoxyphenyl]-2,4- pyrimidineamine 7.3.708 R920894 N4-(3-Hydroxyphenyl)-5-methyl-N2-[4-(1-methyl-1,2,3,4-tetrazol-5-yl)methyleneoxyphenyl]-2,4- pyrimidineamine 7.3.709 R920893 N4-(3-Hydroxyphenyl)-5-methyl-N2-[4-(2-methyl-1,2,3,4-tetrazol-5-yl)methyleneoxyphenyl]-2,4- pyrimidineamine 7.3.710 R925810 N2,N4-Bis(4-ethoxycarbonylmethyleneoxyphenyl)-5-(1,2,3,4-tetrazol-5-yl)-2,4-pyrimidinediamine 7.3.711 R925838 N2-[4-(N-Cyclopropylmethylamino)carbonylmethyleneoxyphenyl]-5-ethoxycarbonyl-N4-(3- hydroxyphenyl)-2,4-pyrimidinediamine 7.3.712 R925839 5-Ethoxycarbonyl-N4-(3-hydroxyphenyl)-N2-[4-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.713 R925840 N2-[4-(N-2,3-Dihydroxypropylamino) carbonylmethyleneoxyphenyl]-5-ethoxycarbonyl-N4- (3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.714 R925841 N2,N4-Bis[4-[N-(3-methoxybenzylamino) carbonylmethyleneoxy]phenyl]-5-bromo-2,4-pyrimidinediamine 7.3.715 R925842 5-Bromo-N4-[4-[(N-cyclopropylmethylamino) carbonylmethyleneoxyphenyl]-N2-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.716 R925843 5-Bromo-N2-(3-hydroxyphenyl)-N4-[4-(N-3-methoxybenzylamino)carbonylmethyleneoxyphenyl]- 2,4-pyrimidinediamine 7.3.717 R926698 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-(2-carboxybenzofuran-5-yl)-2,4-pyrimidinediamine 7.3.718 R926016 N2,N4-Bis(4-trifluoromethylphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.719 R926406 N2-(3,4-Ethylenedioxyphenyl)-N4-(3,4-methylenedioxyphenylhydrazinyl)-5-fluoro-2- pyrimidineamine 7.3.720 R926566 N2,N4-Bis(4-ethoxycarbonylmethylenedioxyphenyl)-6-ethoxycarbonyl-5-nitro-2,4- pyrimidinediamine 7.3.721 R950202 N2,N4-Bis[2-(methylthio)-1,3-benzothiaz-6-yl]-5-fluoro-2,4-pyrimidinediamine 7.3.722 R950240 N4-[3-(2-Hydroxyethyleamino)phenyl]-N2-[3-(N-(N-methyl)- piperazino)carbonylmethyleneaminophenyl]-5-fluoro-2,4-pyrimidinediamine 7.3.723 R950241 N4-[3-(2-Hydroxyethyleamino)phenyl]-N2-[3-(N-piperazino)-carbonylmethyleneaminophenyl]-5- fluoro-2,4-pyrimidinediamine 7.3.724 R950251 (±)-N4-(3-Aminophenyl)-5-fluoro-N2-(3-(3-carboxy-3-D,L-N- phtaloylamino)propylenecarbonylaminophenyl)-2,4-pyrimidinediamine 7.3.725 R950255 (±)-N4-(3-Aminophenyl)-5-fluoro-N2-[3-(3-carboxy-3-amino)propylenecarbonylaminophenyl]-2,4- pyrimidinediamine 7.3.726 R926559 5-Methoxycarbonyl-N2,N4-bis[4-(N-pyrrolidino) carbonylmethyleneoxyphenyl)-2,4-pyrimidinediamine 7.3.727 R925565 N2,N4-Bis(4-ethoxycarbonylmethyleneoxyphenyl)-5-fluoro-2,4-pyridinediamine 7.3.728 R926799 N2-(3-Ethoxycarbonylmethyleneoxyphenyl)-5-ethoxycarbonyl-N4-(3,4- tetrafluoroethylenedioxyphenyl)-2,4-pyrimidinediamine 7.3.729 R926811 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[3-[N-2-(D)-(+)- biotinylethylamino]carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.730 R926725 5-Fluoro-N4-(3-hydroxyphenyl)-N2[2-(N-methyl-N-2-hydroxyethyl)carbonylbenzofuran-5-yl)-2,4- pyrimidinediamine 7.3.731 R926228 N2,N4-Bis(3-ethoxycarbonylphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.732 R908696 N2-(3-chloro-4-methylbenzyl)-N4-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.733 R908697 (±)-N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-(2-phenylethyl)-2,4-pyrimidinediamine 7.3.734 R925745 N2-(3-Ethoxycarbonylphenyl)-N4-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.735 R920394 N4-(3,4-Difluorophenyl)-5-fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.736 R920396 N4-(4-Chlorophenyl)-5-fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.736.1 R920397 N4-(3,4-Dichlorophenyl)-5-fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.737 R920398 5-Fluoro-N4-(5-methylpyridin-2-yl)-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.738 R920399 5-Fluoro-N4-(6-methylpyridin-2-yl)-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.739 R920405 N4-(5-Chloropyridin-2-yl)-5-fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl)-2,4- pyrimidinediamine 7.3.740 R920406 N4-(6-Chloropyridin-3-yl)-5-fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl)-2,4- pyrimidinediamine 7.3.741 R927016 5-Fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-N4-(4-methylpyridin-2-yl)-2,4- pyrimidinediamine 7.3.742 R920407 5-Fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-N4-(3-trifluoromethoxyphenyl)-2,4- pyrimidinediamine 7.3.743 R920408 N4-(3,4-Difluoromethylenedioxyphenyl)-5-fluoro-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.744 R920410 N4-(3-Chloro-4-trifluoromethoxyphenyl)-5-fluoro-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.745 R926827 N4-(4-Ethoxyphenyl)-5-fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.746 R926828 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[4-methoxy-3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.747 R926829 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[4-methoxy-3-(N-methylamino)carbonylmethyleneoxyphenyl]- 2,4-pyrimidinediamine 7.3.748 R926832 N4-(3-Chlorophenyl)-5-fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.749 R926833 5-Fluoro-N4-(3-methoxy-5-trifluoromethylphenyl)-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.750 R926834 5-Fluoro-N4-(3-hydroxy-4-methoxyphenyl)-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]- 2,4-pyrimidinediamine 7.3.751 R926835 5-Fluoro-N4-(4-methoxy-3-trifluoromethylphenyl)-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.752 R926838 5-Fluoro-N4-(4-fluoro-3-trifluoromethylphenyl)-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.753 R926839 N4-(3-Chloro-4-methylphenyl)-5-fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.754 R926840 N4-(2-Chloro-5-methylphenyl)-5-fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.755 R926830 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[3-(N-isopropylamino)carbonylmethyleneoxyphenyl]- 2,4-pyrimidinediamine 7.3.756 R926848 N2-[3-(N-Cyclopropylamino)carbonylmethyleneoxyphenyl]-N4-(3,4-ethylenedioxyphenyl)-5-fluoro- 2,4-pyrimidinediamine 7.3.757 R926851 N4-(4-Cyano-3-methylphenyl)-5-fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.758 R926855 5-Fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-N4-[3-(tetrazol-5-yl)phenyl]-2,4- pyrimidinediamine 7.3.759 R926856 5-Fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-N4-(N-methylphthalimido-4-yl)-2,4- pyrimidinediamine 7.3.760 R926859 N4-(2,5-Dimethoxy-4-chlorophenyl)-5-fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]- 2,4-pyrimidinediamine 7.3.761 R926862 5-Fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-N4-(3-methoxycarbonyl-5- trifluoromethylphenyl)-2,4-pyrimidinediamine 7.3.762 R926870 5-Fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-N4-[3-(2-phenyl-1,3,4-oxadiazol-5- yl)phenyl]-2,4-pyrimidinediamine 7.3.763 R926871 N4-[3-(2-(3-Chlorophenyl)-1,3,4-oxadiazol-5-yl)phenyl]-5-fluoro-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.764 R926879 5-Fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-N4-[4-trifluoromethoxyphenyl]-2,4- pyrimidinediamine 7.3.765 R926880 5-Fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-N4-[4-trifluoromethylphenyl]-2,4- pyrimidinediamine 7.3.766 R926881 N4-(4-Chloro-3-trifluoromethylphenyl)-5-fluoro-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl)-2,4-pyrimidinediamine 7.3.767 R926883 5-Fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl)-N4-(quinolin-6-yl)-2,4- pyrimidinediamine 7.3.768 R926886 5-Fluoro-N4-(2-methoxypyridin-5-yl)-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl)-2,4- pyrimidinediamine 7.3.769 R927023 5-Fluoro-N4-[2-(2-hydroxyethyleneoxy)pyridin-5-yl]-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.770 R920404 N4-(2,6-Dimethoxypyridin-3-yl)-5-fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl)-2,4- pyrimidinediamine 7.3.771 R927042 N4-(4-Chloro-3-methoxyphenyl))-5-fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl)- 2,4-pyrimidinediamine 7.3.772 R920411 N4-(3-Chloro-4-trifluoromethoxyphenyl)-5-fluoro-N2-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.773 R926866 5-Fluoro-N2-(3-hydroxyphenyl)-N4-[3-(3-phenyl-1,3,4-oxadiazol-5-yl)phenyl]-2,4- pyrimidinediamine 7.3.774 R926794 N4-(3,4-Difluoromethylenedioxyphenyl)-5-fluoro-N2-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.775 R926885 5-Fluoro-N2-(3-hydroxyphenyl)-N4-(3-trifluoromethoxyphenyl)-2,4-pyrimidinediamine 7.3.776 R926887 N4-(2,6-Dimethoxypyridin-3-yl)-5-fluoro-N2-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.777 R927017 5-Fluoro-N2-(3-hydroxyphenyl)-N4-(5-methylpyridin-2-yl)-2,4-pyrimidinediamine 7.3.778 R927018 N4-(6-Chloropyridin-3-yl)-5-fluoro-N2-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.779 R927019 5-Fluoro-N2-(3-hydroxyphenyl)-N4-(quinolin-6-yl)-2,4-pyrimidinediamine 7.3.780 R927020 N4-(5-Chloropyridin-2-yl)-5-fluoro-N2-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.781 R926860 N4-(4-Chloro-2,5-dimethoxyphenyl)-5-fluoro-N2-(3-hydroxyphenyl)-2,4-primidinediamine 7.3.782 R927026 N4-(4-Chlorophenyl)-5-fluoro-N2-(2-methoxycarbonylbenzofuran-5-yl)-2,4-pyrimidinediamine 7.3.783 R927027 N4-(3,4-Dichlorophenyl)-5-fluoro-N2-(2-methoxycarbonylbenzofuran-5-yl)-2,4-pyrimidinediamine 7.3.784 R926863 5-Fluoro-N4-(3-hydroxyphenyl)-N2-(3-methoxycarbonyl-5-trifluoromethylphenyl)-2,4- pyrimidinediamine 7.3.785 R926857 N2-(4-Chloro-2,5-dimethoxyphenyl)-5-fluoro-N4-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.786 R926846 N2-(3-Bromo-5-trifluorophenyl)-5-fluoro-N4-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.787 R926841 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[3-(1H-pyrazol-3-yl)phenyl]-2,4-pyrimidinediamine 7.3.788 R926842 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[3-(tetrazol-5-yl)phenyl]-2,4-pyrimidinediamine 7.3.789 R926831 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[3-(1,3-oxazol-5-yl)phenyl]-2,4-pyrimidinediamine 7.3.790 R926844 N2-(3-Chloro-4-trifluoromethylphenyl)-5-fluoro-N4-(3-hydroxyphenyl)-2,4-pyrimidinedimine 7.3.791 R926843 5-Fluoro-N4-(3,4-ethylenedioxyphenyl)-N2-[3-(tetrazol-5-yl)phenyl]-2,4-pyrimidinediamine 7.3.792 R926845 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-(4-methoxy-2-methylphenyl)-2,4-pyrimidinediamine 7.3.793 R926847 N2-[5-(N-Aminocarbonylmethylene-2-oxo-1,3-oxazol-3(2H)-yl)phenyl]-N4-(3,4- ethylenedioxyphenyl)-5-fluoro-2,4-pyrmidinediamine 7.3.794 R926874 N2-[3-(2-Ethoxycarbonylmethylene-1,3,4-oxadiazol-5-yl)phenyl-5-fluoro-N4-(3-hydroxyphenyl)-2,4- pyrimidinediamine 7.3.795 R926836 N2,N4-Bis(3-boronylphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.796 R926837 N2-(3-Boronylphenyl)-N4-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.797 R927030 (±)-N4-(3,4-Difluorophenyl)-N2-(2,3-dihydro-2-methoxycarbonylbenzofuran-5-yl)-5-fluoro-2,4- pyrimidinediamine 7.3.798 R927024 (±)-N4-(4-Chlorophenyl)-N2-(2,3-dihydro-2-methoxycarbonylbenzofuran-5-yl)-5-fluoro-2,4- pyrimidinediamine 7.3.799 R927031 (±)-N4-(3,4-Dichlorophenyl)-N2-(2,3-dihydro-2-methoxycarbonylbenzofuran-5-yl)-5-fluoro-2,4- pyrimidinediamine 7.3.800 R927032 (±)-N2-(2,3-Dihydro-2-methoxycarbonylbenzofuran-5-yl)-N4-(2,6-dimethoxypyridin-3-yl)-5-fluoro- 2,4-pyrimidinediamine 7.3.801 R927025 (±)-N2-(2,3-Dihydro-2-methoxycarbonylbenzofuran-5-yl)-5-fluoro-N4-[2-(2- hydroxyethyleneoxy)pyridin-5-yl]-5-fluoro-2,4-pyrimidinediamine 7.3.802 R927028 (±)-N2-(2,3-Dihydro-2-methoxycarbonylbenzofuran-5-yl)-5-fluoro-N4-(3-trifluorophenyl)-2,4- pyrimidinediamine 7.3.803 R927029 (±)-N2-(2,3-Dihydro-2-methoxycarbonylbenzofuran-5-yl)-N4-(3,4-difluoromethylenedioxyphenyl)-5- fluoro-2,4-pyrimidinediamine 7.3.804 R927035 (±)-N4-(3,4-Difluorophenyl)-5-fluoro-N2-[2,3-dihydro-2-(N-methylamino)carbonylbenzofuran-5-yl]- 2,4-pyrimidinediamine 7.3.805 R927036 (±)-N4-(4-Chlorophenyl)-N2-[2,3-dihydro-2-(N-methylamino)carbonylbenzofuran-5-yl]-5-fluoro-2,4- pyrimidinediamine 7.3.806 R927037 (±)-N4-(3,4-Dichlorophenyl)-N2-[2,3-dihydro-2-(N-methylamino)carbonylbenzofuran-5-yl]-5-fluoro- 2,4-pyrimidinediamine 7.3.807 R927038 (±)-N4-(2,6-Dimethoxypyridin-3-yl)-N2-[2,3-dihydro-2-(N-methylamino)carbonylbenzofuran-5-yl]- 5-fluoro-2,4-pyrimidinediamine 7.3.808 R927039 (±)-N2-[2,3-Dihydro-(N-methylamino)carbonylbenzofuran-5-yl]-5-fluoro-N4-[2-(2- hydroxyethyleneoxy)pyridin-5-yl]-2,4-pyrimidinediamine 7.3.809 R927040 (±)-N2-[2,3-Dihydro-(N-methylamino)carbonylbenzofuran-5-yl]-5-fluoro-N4-(3- trifluoromethoxyphenyl)-2,4-pyrimidinediamine 7.3.810 R927041 (±)-N2-[2,3-Dihydro-(N-methylamino)carbonylbenzofuran-5-yl]-N4-(3,4- difluoromethyleneoxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.811 R926238 N2-(4-Carboxymethyleneoxyphenyl)-N4-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.812 R920395 N4-(1,4-Benzoxazin-6-yl)-5-fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine Hydrogen Chloride Salt 7.3.813 R926826 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine Trifluoro Acetic Acid Salt 7.3.814 R926752 5-Fluoro-N4-[(1H)-indol-6-yl]-N2-[4-methoxy-3-[(N-methylamino)carbonylmethyleneoxy]phenyl]- 2,4-pyrimidinediamine 7.3.815 R926753 5-Fluoro-N4-(3-hydroxy-4-methylphenyl)-N2-[3-[(N-methylamino)carbonylmethyleneoxy]phenyl]- 2,4-pyrimidinediamine 7.3.816 R926754 5-Fluoro-N4-(3-dihydroxyborylphenyl)-N2-[3-[(N-methylamino)carbonylmethyleneoxy]phenyl]-2,4- pyrimidinediamine 7.3.817 R926755 5-Fluoro-N4-(3-dihydroxyborylphenyl)-N2-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.818 R926756 N2-(3,4-Ethylenedioxyphenyl)-5-fluoro-N4-(3-hydroxyborylphenyl)-2,4-pyrimidinediamine 7.3.819 R926757 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[4-methyl-3-[(N-methylamino)carbonylmethyleneoxy]phenyl]- 2,4-pyrimidinediamine 7.3.820 R926758 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[4-methyl-3-[(N- methylamino)carbonylmethyleneoxy]phenyl]-2,4-pyrimidinediamine 7.3.821 R926759 5-Fluoro-N4-(3-hydroxy-4-methylphenyl)-N2-[4-methyl-3-[(N- methylamino)carbonylmethyleneoxy]phenyl]-2,4-pyrimidinediamine 7.3.822 R926760 5-Fluoro-N2,N4-bis[4-methyl-3-[(N-methylamino)carbonylmethyleneoxy]phenyl]-2,4- pyrimidinediamine 7.3.823 R926761 5-Fluoro-N4-(3-hydroxyphenyl)-N2-(3,4,5-trimethoxyphenyl)-2,4-pyrimidinediamine 7.3.824 R926762 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-(3,4,5-trimethoxyphenyl)-2,4-pyrimidinediamine 7.3.825 R926763 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-(3,5-dichloro-4-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.826 R926890 5-Fluoro-N2-(3,5-dichloro-4-hydroxyphenyl)-N4-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.827 R926891 N4-(3-Chloro-4-methoxyphenyl)-5-fluoro-N2-[3-[(N-methylamino)carbonylmethyleneoxy]phenyl]- 2,4-pyrimidinediamine 7.3.828 R926892 5-Fluoro-N4-(3-fluoro-4-methoxyphenyl)-N2-[3-[(N-methylamino)carbonylmethyleneoxy]phenyl]- 2,4-pyrimidinediamine 7.3.829 R926893 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N4-(3-hydroxy-5-methylphenyl)-2,4-pyrimidinediamine 7.3.830 R926894 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-(3-fluoro-5-trifluoromethylphenyl)-2,4- pyrimidinediamine 7.3.831 R926895 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-(3-methyl-5-trifluoromethylphenyl)-2,4- pyrimidinediamine 7.3.832 R926896 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-(5-methoxy-2-methylphenyl)-2,4-pyrimidinediamine 7.3.833 R926897 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-(2-fluoro-5-methylphenyl)-2,4-pyrimidinediamine 7.3.834 R926898 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-(3,5-difluorophenyl)-2,4-pyrimidinediamine 7.3.835 R926899 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-(4-trifluoromethylthiophenyl)-2,4-pyrimidinediamine 7.3.836 R926900 N4-[3-(Benzothiazol-2-yl)-4-chlorophenyl]-5-fluoro-N2-[3-[(N- methylamino)carbonylmethyleneoxy]phenyl)-2,4-pyrimidinediamine 7.3.837 R926902 5-Fluoro-N2-[3-[(N-methylamino)carbonylmethyleneoxy]phenyl]-N4-(3-methoxy-4-methylphenyl)- 2,4-pyrimidinediamine 7.3.838 R926903 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[2-(methoxycarbonyl)-(1H)-indol-6-yl])-2,4-pyrimidinediamine 7.3.839 R926904 5-Fluoro-N2-[3-[(N-methylamino)carbonylmethyleneoxy]phenyl]-N4-[2-(methoxycarbonyl)-(1H)- indol-6-yl]-2,4-pyrimidinediamine 7.3.840 R926905 N4-[3-[[4-(Ethoxycarbonyl)pipiridino]methyl]phenyl]-5-fluoro-N2-[3-[(N- methylamino)carbonylmethyleneoxy]phenyl-2,4-pyrimidinediamine 7.3.841 R926906 N2-[3-(Ethoxycarbonyl-1,1-dimethylmethyleneoxy)phenyl]-5-fluoro-N4-(3-hydroxyphenyl)-2,4- pyrimidinediamine 7.3.842 R926907 N2-[3-(Ethoxycarbonyl-1,1-dimethylmethyleneoxy)phenyl]-N4-(3,4-ethylenedioxyphenyl)-5-fluoro- 2,4-pyrimidinediamine 7.3.843 R926908 N2-[3-(Ethoxycarbonyl-1,1-dimethylmethyleneoxy)phenyl]-5-fluoro-N4-(3-hydroxy-4- methylphenyl)-2,4-pyrimidinediamine 7.3.844 R926909 N2-[3-(Ethoxycarbonyl-1,1-dimethylmethyleneoxy)phenyl]-5-fluoro-N4-[(1H)-indol-6-yl]-2,4- pyrimidinediamine 7.3.845 R926913 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[3-[(N-methylamino)carbonyl-1,1- dimethylmethyleneoxy]phenyl]-2,4-pyrimidinediamine 7.3.846 R926914 5-Fluoro-N4-(1,2,3,4-tetrahydroisoquin-7-yl)-N2-[3-[(N- methylamino)carbonylmethyleneoxy]phenyl]-2,4-pyrimidinediamine 7.3.847 R926915 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[3-[(N-methylamino)carbonyl-1,1- dimethylmethyleneoxy]phenyl]-2,4-pyrimidinediamine 7.3.848 R926917 5-Fluoro-N4-[3-[(N-allylamino)carbonyloxy]phenyl]-N2-[3-[(N- methylamino)carbonylmethyleneoxy]phenyl]-2,4-pyrimidinediamine 7.3.849 R926916 5-Fluoro-N2-[3-[(N-methylamino)carbonylmethyleneoxy]phenyl]-N4-[3-[[(N- isopropylamino)carbonyl]-N-isopropylamino)carbonyloxy]phenyl]-2,4-pyrimidinediamine 7.3.850 R926918 N4-[3-[[N-(Ethoxycarbonylmethyl)amino]carbonyloxy]phenyl]-5-fluoro-N2-[3-[(N- methylamino)carbonylmethyleneoxy]phenyl]-2,4-pyrimidinediamine 7.3.851 R926919 N4-[3-[(N-(Ethylamino)carbonyloxy]phenyl]-5-fluoro-N2-[3-[(N- methylamino)carbonylmethyleneoxy]phenyl]-2,4-pyrimidinediamine 7.3.852 R926922 5-Fluoro-N2-[3-[(N-methylamino)carbonylmethyleneoxy]phenyl]-N4-(4-methyl-3- trifluoromethylphenyl)-2,4-pyrimidinediamine 7.3.853 R926923 5-Fluoro-N4-(4-fluoro-3-methylphenyl)-N2-[3-[(N-methylamino)carbonylmethyleneoxy]phenyl]-2,4- pyrimidinediamine 7.3.854 R926925 5-Fluoro-N2-[3-[(N-methylamino)carbonylmethyleneoxy]phenyl]-N4-(3-trifluoromethylthiophenyl)- 2,4-pyrimidinediamine 7.3.855 R926926 N2-[3,5-Bis(methoxycarbonylmethyleneoxy)phenyl]-5-fluoro-N4-(3-hydroxyphenyl)-2,4- pyrimidinediamine 7.3.856 R926927 5-Fluoro-N2-[3-hydroxy-5-(methoxycarbonylmethyleneoxy)phenyl]-N4-(3-hydroxyphenyl)-2,4- pyrimidinediamine 7.3.857 R926928 N2-[3-[(N-Ethylamino)carbonyloxy]phenyl]-5-fluoro-N4-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.858 R926929 5-Fluoro-N2-[3-hydroxy-5-[(N-methylamino)carbonylmethyleneoxy]phenyl]-N4-(3-hydroxyphenyl)- 2,4-pyrimidinediamine 7.3.859 R926930 N2-[3,5-Bis[(N-methylamino)carbonylmethyleneoxy]phenyl]-5-fluoro-N4-(3-hydroxyphenyl)-2,4- pyrimidinediamine 7.3.860 R926931 5-Fluoro-N4-[(1H)-indol-5-yl]-N2-[3-[(N-methylamino)carbonylmethyleneoxy]phenyl]-2,4- pyrimidinediamine 7.3.861 R926932 5-Fluoro-N2-(3-hydroxyphenyl)-N4-[(1H)-indol-5-yl]-2,4-pyrimidinediamine 7.3.862 R926933 5-Fluoro-N4-[(1H)-indol-6-yl]-N2-[3-[(N-methylamino)carbonyl]phenyl]-2,4-pyrimidinediamine 7.3.863 R926934 5-Fluoro-N4-[(1H)-indol-6-yl]-N2-[3-(N-morpholinocarbonyl)phenyl]-2,4-pyrimidinediamine 7.3.864 R926935 N2-[3-[[4-(Ethoxycarbonyl)piperidino]carbonyl]phenyl]-5-fluoro-N4-[(1H)-indol-6-yl]-2,4- pyrimidinediamine 7.3.865 R926936 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[3-[(N-methylamino)carbonyl]phenyl]-2,4-pyrimidinediamine 7.3.866 R926937 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[3-[(N-propylamino)carbonyl]phenyl]-2,4-pyrimidinediamine 7.3.867 R926938 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[3-(N-morphonlinocarbonyl)phenyl]-2,4-pyrimidinediamine 7.3.868 R926939 N2-[3-[[4-(Ethoxycarbonyl)piperidino]carbonyl]phenyl]-5-fluoro-N4-(3-hydroxyphenyl)-2,4- pyrimidinediamine 7.3.869 R926940 N4-[3-[[4-(Ethoxycarbonyl)piperidino]carbonyl]phenyl]-5-fluoro-N2-(3-hydroxyphenyl)-2,4- pyrimidinediamine 7.3.870 R926941 N4-[3-[[4-(Ethoxycarbonyl)piperidino]carbonyl]phenyl]-5-fluoro-N2-[3-[(N- methylamino)carbonylmethyleneoxy]phenyl]-2,4-pyrimidinediamine 7.3.871 7.3.872 R926942 N4-(1-Ethoxy-1,2,3,4-tetrahydronaphthalen-7-yl)-5-fluoro-N2-(3-hydroxyphenyl)-2,4- pyrimidinediamine 7.3.873 R926943 5-Fluoro-N4-(3,4-dihydronaphthalen-7-yl)-N2-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.874 R926944 5-Fluoro-N4-(3,4-dihydronaphthalen-7-yl)-N2-[3-[(N-methylamino)carbonylmethyleneoxy]phenyl]- 2,4-pyrimidinediamine 7.3.875 R926945 N4-(3-Chloro-4-methoxyphenyl)-5-fluoro-N2-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.876 R926946 N2,N4-Bis(3-chloro-4-methoxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.877 R926947 5-Fluoro-N4-(1,2,3,4-tetrahydro-1-oxonaphthalen-7-yl)-N2-[3-[(N- methylamino)carbonylmethyleneoxy]phenyl]-2,4-pyrimidinediamine 7.3.878 R926948 5-Fluoro-N4-(1,2,3,4-tetrahydro-1-hydroxyiminonaphthalen-7-yl)-N2-[3-[(N- methylamino)carbonylmethyleneoxy]phenyl]-2,4-pyrimidinediamine 7.3.879 R926949 5-Fluoro-N4-(1,2,3,4-tetrahydro-1-hydroxynaphthalen-7-yl)-N2-[3-[(N- methylamino)carbonylmethyleneoxy]phenyl]-2,4-pyrimidinediamine 7.3.880 R926950 N4-(3-Chloro-4-methoxyphenyl)-5-fluoro-N2-[2-(methoxycarbonyl)benzofuran-5-yl]-2,4- pyrimidinediamine 7.3.881 R926951 N4-(3-Chloro-4-methoxyphenyl)-5-fluoro-N2-[2,3-dihydro-2-(methoxycarbonyl)benzofuran-5-yl]- 2,4-pyrimidinediamine 7.3.882 R926953 N4-(3-Chloro-4-trifluoromethoxyphenyl)-5-fluoro-N2-[2,3-dihydro-2-(methoxycarbonyl)benzofuran- 5-yl]-2,4-pyrimidinediamine 7.3.883 R926954 N4-(3-Chloro-4-trifluoromethoxyphenyl)-5-fluoro-N2-[2,3-dihydro-2-[(N- methylamino)carbonyl]benzofuran-5-yl]-2,4-pyrimidinediamine 7.3.884 R926955 N4-(3-Chloro-4-methoxyphenyl)-5-fluoro-N2-[2,3-dihydro-2-[(N-methylamino)carbonyl]benzofuran- 5-yl]-2,4-pyrimidinediamine 7.3.885 R926956 5-Fluoro-N2-[2,3-dihydro-2-[(N-methylamino)carbonyl]benzofuran-5-yl]-N4-(4-isopropoxyphenyl)- 2,4-pyrimidinediamine 7.3.886 R925809 N2,N4-Bis(3-phenylphenyl)-2,4-pyrimidinediamine 7.3.887 R940110 2-Dimethylamine-5-fluoro-N4-(thyrosinyl methyl ester)pyrimidine 7.3.888 R940299 5-Fluoro-N2-[3-(methylaminocarbonylmethyleneoxy)phenyl]-N4-(3-aminocarbonylphenyl)-2,4- pyrimidinediamine 7.3.889 R940300 5-Fluoro-N2-[3-(methylaminocarbonylmethyleneoxy)phenyl]-N4-(3-methyloxycarbonyl-4- methoxyphenyl)-2,4-pyrimidinediamine 7.3.890 R940301 5-Fluoro-N4-(3-hydroxyphenyl)-N2-(3-methyloxycarbonyl-4-methoxyphenyl)-2,4-pyrimidinediamine 7.3.891 R940304 5-Fluoro-N4-(3-methylaminocarbonyl-4-methoxyphenyl)-N2-methyl-2,4-pyrimidinediamine 7.3.892 R940306 5-Fluoro-N2-[3-(methylaminocarbonylmethyleneoxy)phenyl]-N4-(3-methylaminocarbonyl-4- methoxyphenyl)-2,4-pyrimidinediamine 7.3.893 R940307 (R)-N2-[3-(dihydroxypropylaminocarbonylmethyleneoxy)-phenyl]-5-fluoro-N4-(3-isopropylphenyl)- 2,4-pyrimidinediamine 7.3.894 R940308 N4-(3-tert-Butylpheny)-5-fluoro-N2-[3-(1,1-dimethyl-2-hydroxyethylaminocarbonylmethyleneoxy)- phenyl]-2,4-pyrimidinediamine 7.3.895 R940309 N4-(3-Aminomethylenephenyl)-5-fluoro-N2-[3-(methylaminocarbonylmethyleneoxy)phenyl]-2,4- pyrimidinediamine 7.3.896 R940311 N4-[3-(2-(N4-(3-aminomethylenephenyl)-5-fluoro-4-pyrimidineamine)-N-methylaminomethylene)- phenyl]-5-fluoro-N2-[3-(methylaminocarbonylmethyleneoxy)phenyl]-2,4-pyrimidineamine 7.3.897 R940312 5-Fluoro-N2-[3-(methylaminocarbonylmethyleneoxy)phenyl]-N4-(3-iso-propylaminocarbonyl-4- methoxyphenyl)-2,4-pyrimidinediamine 7.3.898 R940314 5-Fluoro-N2-[3-(methylaminocarbonylmethyleneoxy)phenyl]-N4-[3-(N-morpholinomethylene)-4- methoxyphenyl]-2,4-pyrimidinediamine 7.3.899 R940316 N2-(3-Chloro-4-hydroxy-5-methylphenyl)-5-fluoro-N4-[3-(N-morpholinomethylene)-4- methoxyphenyl]-2,4-pyrimidinediamine 7.3.900 R940317 N4-(3-N-methylaminomethylenephenyl)-5-fluoro-N2-[3- (methylaminocarbonylmethyleneoxy)phenyl]-2,4-pyrimidinediamine 7.3.901 R940318 N2-(3-Chloro-4-hydroxy-5-methylphenyl)-5-fluoro-N4-[3-(N-piperazinomethylene)-4- methoxyphenyl]-2,4-pyrimidinediamine 7.3.902 R940319 N4-(3-(N-tert-Butoxycarbonyl-N-iso-propylaminomethylene)-4-methoxyphenyl)-5-fluoro-N2-[3- (methylaminocarbonyl methyleneoxy)phenyl]-2,4-pyrimidinediamine 7.3.903 R940321 N4-(3-N,N-Dimethylaminomethylene-4-methoxyphenyl)-5-fluoro-N2-[3- (methylaminocarbonylmethyleneoxy)phenyl]-2,4-pyrimidinediamine 7.3.904 R940323 N4-[(2,2-Dimethyl-4H-benzo[1,4]oxazin-3-one)-6-yl]-5-fluoro-N2-[3- (methylaminocarbonylmethyleneoxy)phenyl]-2,4-pyrimidinediamine 7.3.905 R940337 N4-[3-Dihydro-2,2-dimethyl-4-(2-pyridyl)-benzo[1,4]oxazin-6-yl]-5-fluoro-N2-[3- (methylaminocarbonylmethyleneoxy)phenyl]-2,4-pyrimidinediamine 7.3.906 R940338 N4-[(2,2-Dimethyl-4H-benzo[1,4]oxazin-3-one)-6-yl]-5-fluoro-N2-(1-methylindazolin-5-yl)-2,4- pyrimidinediamine 7.3.907 R940343 N4-[(2,2-Difluoro-4H-benzo[1,4]oxazin-3-one)-6-yl]-5-fluoro-N2-[3- (methylaminocarbonylmethyleneoxy)phenyl]-2,4-pyrimidinediamine 7.3.908 R940345 N4-[(2,2-Dimethyl-4H-5-pyrido[1,4]oxazin-3-one)-7-yl]-5-fluoro-N2-[3- (methylaminocarbonylmethyleneoxy)phenyl]-2,4-pyrimidinediamine 7.3.909 R940346 N4-[(2,2-Dimethyl-4H-benzo[1,4]oxazin-3-one)-6-yl]-5-fluoro-N2-(3-hydroxyphenyl)-2,4- pyrimidinediamine 7.3.910 R940347 N4-[(2,2-Dimethyl-4H-5-pyrido[1,4]oxazin-3-one)-6-yl]-5-fluoro-N2-[3- (methylaminocarbonylmethyleneoxy)phenyl]-2,4-pyrimidinediamine 7.3.911 R940348 N4-[3-Dihydro-2,2-dimethyl-4-(2-pyridyl)-benzo[1,4]oxazin-6-yl]-5-fluoro-N2-(3-hydroxyphenyl)- 2,4-pyrimidinediamine 7.3.912 R940349 N4-[(2,2-Difluoro-4H-benzo[1,4]oxazin-3-one)-6-yl]-5-fluoro-N2-(3-hydroxyphenyl)-2,4- pyrimidinediamine 7.3.913 R940350 N2,N4-[(2,2-Dimethyl-4H-benzo[1,4]oxazin-3-one)-6-yl]-5-fluoro-2,4-pyrimidinediamine 7.3.914 R940351 N2-[(2,2-Difluoro-4H-benzo[1,4]oxazin-3-one)-6-yl]-N4-[(2,2-dimethyl-4H-benzo[1,4]oxazin-3- one)-6-yl]-5-fluoro-2,4-pyrimidinediamine 7.3.915 R940352 N2,N4-[(2,2-Difluoro-4H-benzo[1,4]oxazin-3-one)-6-yl]-5-fluoro-2,4-pyrimidinediamine 7.3.916 R940353 N4-[(2,2-Difluoro-4H-benzo[1,4]oxazin-3-one)-6-yl]-5-fluoro-N2-(2-methoxycarbonylbenzofur-5- yl)-2,4-pyrimidinediamine 7.3.917 R940354 N4-[(2,2-Dimethyl-4H-benzo[1,4]oxazin-3-one)-6-yl]-5-fluoro-N2-(2-methoxycarbonylbenzofur-5- yl)-2,4-pyrimidinediamine 7.3.918 R950244 N2,N4-Bis(3-N-acetylaminophenyl)-5-fluoro-N2,N4-pyrimidinediacetylamine 7.3.919 R950245 N4-(3-N,N-Diacetylaminophenyl)-N2-(3-N-acetylaminopheny)-5-fluoro-N2,N4- pyrimidinediacetylamine 7.3.920 R950246 N4-(3-N-Acetylaminophenyl)-N2-(3-N,N-diacetylaminopheny)-5-fluoro-N2,N4- pyrimidinediacetylamine 7.3.921 R950247 N2,N4-Bis(3-N,N-diacetylaminophenyl)-5-fluoro-N2,N4-pyrimidinediacetylamine 7.3.922 R950261 N4-(3-Nitrophenyl)-5-fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.923 R950262 N4-(3-Aminophenyl)-5-fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine HCl salt 7.3.924 R950264 N4-(3-Aminophenyl)-5-fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamineN4-(3-Bis-N-methylaminophenyl)-5-fluoro-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.925 R950264 N4-(3-Bis-N-methylaminophenyl)-5-fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]- 2,4-pyrimidinediamine 7.3.926 R950265 N4-(3-N-Hydroxyethylaminophenyl)-5-fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]- 2,4-pyrimidinediamine 7.3.927 R950266 N4-(3-Bis(N-hydroxyethyl)aminophenyl)-5-fluoro-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.928 R950267 N4-(3-N-Methylaminophenyl)-5-fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.929 R950290 N4-(3-Hydroxycarbonyl-4-hydroxyphenyl)-5-fluoro-N2-[3-ethoxycarbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.930 R950291 N4-(3-Hydroxycarbonyl-4-hydroxyphenyl)-5-fluoro-N2-[3-hydroxycarbonylmethyleneoxyphenyl]- 2,4-pyrimidinediamine 7.3.931 R950293 N4-(3-Methoxycarbonyl-4-hydroxyphenyl)-5-fluoro-N2-[3-ethoxycarbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.932 R950294 N4-(4-Methoxy-3,4-dihydro-2H-1-benzopyran-6-yl)-5-fluoro-N2-[3- ethoxycarbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.933 R950295 N4-(4-Methoxy-3,4-dihydro-2H-1-benzopyran-6-yl)-5-fluoro-N2-[3- methoxycarbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.934 R950296 N4-(4-Ethoxy-3,4-dihydro-2H-1-benzopyran-6-yl)-5-fluoro-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.935 R950344 N4-(4-Hydroxycarbonylethyleneoxyphenyl)-5-fluoro-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.936 R950345 N4-(2,3-Dihydro-4-benzypyranon-6-yl)-5-fluoro-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.937 R950346 N4-(4-Methoxycarbonylethyleneoxyphenyl)-5-fluoro-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.938 R950347 N4-(4-Hydroxyphenyl)-5-fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.939 R950348 N4-(2,3-Dihydro-4-oxime-benzypyran-6-yl)-5-fluoro-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.940 R950349 N4-(4-Hydroxy-3,4-dihydro-2H-1-benzopyran-6-yl)-5-fluoro-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.941 R950356 N4-(2,3-Dihydro-4-O-methyloxime-benzypyran-6-yl)-5-fluoro-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.942 R950368 N4-(4-Amino-3,4-dihydro-2H-1-benzopyran-6-yl)-5-fluoro-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.943 R950371 N4-(3-Methylcarbonylphenyl)-5-fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.944 R950372 N4-(3-Phenylcarbonylphenyl)-5-fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.945 R950373 N4-(3-Methyloximephenyl)-5-fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.946 R950374 N4-(3-Phenyloximephenyl)-5-fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.947 R950376 N2,N4-Bis(3-methylcarbonylphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.948 R950377 N2,N4-Bis(3-phenylcarbonylphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.949 R950378 N2,N4-Bis(2,3-dihydro-4-benzypyranon-6-yl)-5-fluoro-2,4-pyrimidinediamine 7.3.950 R950379 N2,N4-Bis(3-methyloximephenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.951 R950380 N2,N4-Bis(3-phenyloximephenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.952 R950381 N2,N4-Bis(2,3-dihydro-4-oxime-benzypyran-6-yl)-5-fluoro-2,4-pyrimidinediamine 7.3.953 R950382 N4-(4-Acetyloxy-3,4-dihydro-2H-1-benzopyran-6-yl)-5-fluoro-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.954 R950383 N4-(4-Azido-3,4-dihydro-2H-1-benzopyran-6-yl)-5-fluoro-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.955 R950385 N4-(4-Benzypyran-6-yl)-5-fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.956 R950386 N4-(3-Hydroxymethylen-4-methoxyphenyl)-5-fluoro-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.957 R950388 N4-(3-Amino-4-ethoxyphenyl)-5-fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.958 R950389 N4-(4-Ethoxy-3-hydroxysulfonylphenyl)-5-fluoro-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.959 R950391 N2,N4-Bis(3-methoxycarbonyl-4-trifluoromethoxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.960 R950392 N4-(3-Methoxycarbonyl-4-trifluoromethoxyphenyl)-5-fluoro-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.961 R950393 N4-(4-Acetylamino-3,4-dihydro-2H-1-benzopyran-6-yl)-5-fluoro-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.962 R945236 N4-[2,4-Dihydro-1-oxo-4H-imidazo[2,1-c][1,4]benzoxazin-8-yl]-5-fluoro-N2-(3-hydroxyphenyl)-2,4- pyrimidinediamine 7.3.963 R945237 5-Fluoro-N2-(3-hydroxyphenyl)-N4-[1-oxo-1,2,3,6-tetrahydropyrimido[2,1-c][1,4]benzoxazin-9-yl]- 2,4-pyrimidinediamine 7.3.964 R945242 5-Fluoro-N2-(3-methylaminocarbonylmethyleneoxyphenyl)-N4-[2H-pyrido[3,2-b]-1,4-oxazin-3(4H)- one-7-yl]-2,4-pyrimidinediamine 7.3.965 R945263 5-Fluoro-N2-(3-methylaminocarbonylmethyleneoxyphenyl)-N4-[2H-pyrido[3,2-b]-1,4-oxazin-7-yl]- 2,4-pyrimidinediamine 7.3.966 R945280 5-Fluoro-N2-(3-methylaminocarbonylmethyleneoxyphenyl)-N4-[2H-pyrido[3,2-b]-1,4-oxazin-3(4H)- one-6-yl]-2,4-pyrimidinediamine 7.3.967 R945299 5-Fluoro-N2-(3-methylaminocarbonylmethyleneoxyphenyl)-N4-[2H-pyrido[3,2-b]-1,4-oxazin-6-yl]- 2,4-pyrimidinediamine R908698 R908698 N4-(1,4-Benzoxazin-3-on-7-yl))-5-fluoro-N2-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.969 R908699 N2-(1,4-Benzoxazin-3-on-7-yl)-5-fluoro-N4-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.970 R908701 N4-(1,4-Benzoxazine-3-on-7-yl)-5-fluoro-N2-((N-methyl acetamido-2)-3-phenoxy)-2,4- pyrimidinediamine N4-(1,4-Benzoxazine-3-on-6-yl)-5-fluoro-N2-[(N-methyl acetamido-2)-3- phenoxy)]-2,4-pyrimidinediamine 7.3.971 R908701 R908701)N4-(1,4-Benzoxazine-3-on-6-yl)-5-fluoro-N2-[(N-methyl acetamido-2)-3-phenoxy)]-2,4- pyrimidinediamine 7.3.972 R908702 N4-(1,4-Benzoxazine-3-on-6-yl)-5-fluoro-N2-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.973 R908703 5-Fluoro-N4-(3-hydroxyphenyl)-N2-(N-methyl-1,4-benzoxazine-3-on-6-yl)-2,4-pyrimidinediamine 7.3.974 R908704 5-Fluoro-N4-(3-hydroxyphenyl)-N2-(N-methyl-1,4-benzoxazin-7-yl)-2,4-pyrimidinediamine 7.3.975 R908706 5-Fluoro-N2-[(N-methyl acetamido-2)-3-phenoxy]-N4-(N-methyl-1,4-benzoxazin-7-yl)-2,4- pyrimidinediamine N2-(1,4-Benzoxazin-7-yl)-5-fluoro-N4-(3-hydroxyphenyl)-2,4- pyrimidinediamine 7.3.976 R908706 N2-(1,4-Benzoxazin-7-yl)-5-fluoro-N4-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.977 R908707 5-Fluoro-N2-(3-hydroxyphenyl)-N4-(N-methyl-1,4-benzoxazin-7-yl)-2,4-pyrimidinediamine 7.3.978 R908709 5-Fluoro-N4-(3-hydroxyphenyl)N2-(N-Methyl-1,4-benzoxazine-3-on-7-yl)-2,4-pyrimidinediamine5- Fluoro-N2-(3-hydroxyphenyl)-N4-(N-methyl-1,4-benzoxazin-3-on-6-yl)-2,4-pyrimidinediamine 7.3.979 R908709 5-Fluoro-N2-(3-hydroxyphenyl)-N4-(N-methyl-1,4-benzoxazin-3-on-6-yl)-2,4-pyrimidinediamine 7.3.980 R908734 5-Fluoro-N2-(3-hydroxyphenyl)-N4-(N-methyl-1,4-benzoxazin-6-yl)-2,4-pyrimidinediamine N2-(N- Ethylcarbonylmethyleneoxy-1,4-benzoxazin-6-yl)-5-fluoro-N2-[3- hydroxyphenyl)phenyl]pyrimidinediamine 7.3.981 R908734 N2-(N-Ethylcarbonylmethyleneoxy-1,4-benzoxazin-6-yl)-5-fluoro-N2-[3- hydroxyphenyl)phenyl]pyrimidinediamine 7.3.982 R908712 (+/−)-5-Fluoro-N2-[(N-methyl acetamido-2)-3-phenoxy]-N4-(2-methyl-1,4-benzoxazin-6-yl)-2,4- pyrimidinediamine 7.3.983 R908734 N2-(N-Ethylcarbonylmethyleneoxy-1,4-benzoxazin-6-yl)-5-fluoro-N2-[3- hydroxyphenyl)phenyl]pyrimidinediamine 7.3.984 R909255 N4-(1,4-Benzoxazin-6-yl)-N2-(3-chloro-4-hydroxy-5-methylphenyl)-5-fluoropyrimidinediamine 7.3.985 R909259 5-Fluoro-N2-[3-(N-methylaminocarbonylmethyleneoxy)phenyl]-N4-(N-methyl-1,4-benzoxazin-6- yl)pyrimidinediamine 7.3.986 R909260 5-Fluoro-N2-[3-(N-methylaminocarbonylmethyleneoxy)phenyl]-N4-[6-(N-methyl-1,4-benzoxazin-3- onyl)]pyrimidinediamine 7.3.987 R909261 5-Fluoro-N2-[3-(N-methylaminocarbonylmethyleneoxy)phenyl]-N4-(N-methyl-1,4-benzoxazin-3-on- 7-yl)]-2,4-pyrimidinediamine 7.3.988 R909263 (+/−)-5-Fluoro-N4-(3-hydroxyphenyl]-N2-(2-methyl-1,4-benzothiazin-3-on-6-yl)pyrimidinediamine 7.3.989 R909264 5-Fluoro-N2-[3-hydroxyphenyl)-N4-(N-methyl-1,4-benzoxazin-3-on-7-yl)-2,4-pyrimidinediamine 7.3.990 R909265 N4-(3-Ethylcarboxy-4H-imidazo[5,1-c]-1,4-benzoxazin-6-yl)-5-fluoro-N2-[3-(N- methylaminocarbonylmethyleneoxy)phenyl]pyrimidinediamine 7.3.991 R909266 N4-(1,4-Benzoxazin-7-yl)-N2-[3-ethoxycarbonylmethyleneoxy)phenyl]-5-fluoro-2,4- pyrimidinediamine 7.3.992 R909267 N2-(3-Ethylcarboxy-4H-imidazo[5,1-c]-1,4-benzoxazin-6-yl)-5-fluoro-N4-(3- hydroxyphenyl)pyrimidinediamine 7.3.993 R909268 N2-(1,4-Benzoxazin-3-on-6-yl)-5-fluoro-N4-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.994 R909290 N2-[3-(N,N-Dimethylaminocarbonylmethyleneoxy)phenyl]-N4-(1,4-benzoxazin-6-yl)-5-fluoro--2,4- pyrimidinediamine 7.3.995 R909292 N4-(4N-Carboxamidino-1,4-benzoxazin-6-yl)-5-fluoro-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.996 R909308 N4-(3,3-Dimethyl-1,4-benzoxazin-6-yl)-N2-[3-ethoxycarbonylmethyleneoxy)phenyl]-5-fluoro-2,4- pyrimidinediamine 7.3.997 R909309 N4-(3,3-Dimethyl-1,4-benzoxazin-6-yl)-5-fluoro-N2-[3-(N- methylaminocarbonylmethyleneoxy)phenyl]-2,4-pyrimidinediamine 7.3.998 R909309 N4-(3,3-Dimethyl-1,4-benzoxazin-6-yl)-5-fluoro-N2-[3-(N- methylaminocarbonylmethyleneoxy)phenyl]-2,4-pyrimidinediamine 7.3.999 R935221 N4-(2,4-Diiodo-3-hydroxypheny)-5-fluoro-N2-(3-iodo-1-methyl-indazoline-5-yl)-2,4- pyrimidinediamine 7.3.1000 R935222 5-Fluoro-N4-(4-isopropoxyphenyl)-N2-[1-(methoxycarbonyl)methyl-indazoline-5-yl]-2,4- pyrimidinediamine 7.3.1001 R935223 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[1-(methoxycarbonyl)methyl-indazoline-5-yl]-2,4- pyrimidinediamine 7.3.1002 R935224 5-Fluoro-N2-(4-isopropoxyphenyl)-N4-[1-(N-methylaminocarbonyl)methyl-indazoline-6-yl]-2,4- pyrimidinediamine 7.3.1003 R935225 N2-(3,4-Ethylenedioxyphenyl)-5-fluoro-N4-[1-(N-methylaminocarbonyl)methyl-indazoline-6-yl]- 2,4-pyrimidinediamine 7.3.1004 R935237 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[1-(methoxycarbonyl)methyl-indazoline-5-yl]-2,4- pyrimidinediamine 7.3.1005 R935238 N2,N4-Bis[1-(2-hydroxyethyl)indazoline-6-yl]-5-fluoro-2,4-pyrimidinediamine 7.3.1006 R935239 5-Fluoro-N4-(4-isopropoxyphenyl)-N2-[1-(N-methylaminocarbonyl)methyl-indazoline-5-yl]-2,4- pyrimidinediamine 7.3.1007 R935240 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[1-(N-methylaminocarbonyl)methyl-indazoline-5-yl]- 2,4-pyrimidinediamine 7.3.1008 R935242 5-Fluoro-N2-(4-isopropoxyphenyl)-N4-[1-(methoxycarbonyl)methyl-indazoline-5-yl]-2,4- pyrimidinediamine 7.3.1009 R935248 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[1-(2-hydroxyethyl)indazoline-6-yl]-2,4- pyrimidinediamine 7.3.1010 R935249 N2-(3,4-Ethylenedioxyphenyl)-5-fluoro-N4-[1-(methoxycarbonyl)methyl-indazoline-5-yl]-2,4- pyrimidinediamine 7.3.1011 R935250 5-Fluoro-N2-(3-hydroxyphenyl)-N4-[1-(methoxycarbonyl)methyl-indazoline-5-yl]-2,4- pyrimidinediamine 7.3.1012 R935251 5-Fluoro-N4-(4-isopropoxyphenyl)-N2-(1H-pyrrol-1-yl)-2,4-pyrimidinediamine 7.3.1013 R935252 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-(1H-pyrrol-1-yl)-2,4-pyrimidinediamine 7.3.1014 R935253 5-Fluoro-N4-(3-hydroxyphenyl)-N2-(1H-pyrrol-1-yl)-2,4-pyrimidinediamine 7.3.1015 R935255 5-Fluoro-N2-[1-(2-hydroxyethyl)indazoline-5-yl]-N4-(4-isopropoxyphenyl)-2,4-pyrimidinediamine 7.3.1016 R935256 5-Fluoro-N2-[1-(2-hydroxyethyl)indazoline-5-yl]-N4-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.1017 R935258 N2-(3,4-Ethylenedioxyphenyl)-5-fluoro-N4-[1-(2-hydroxyethyl)indazoline-5-yl]-2,4- pyrimidinediamine 7.3.1018 R935259 5-Fluoro-N4-[1-(2-hydroxyethyl)indazoline-5-yl]-N2-(3-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.1019 R935261 N2-(3,4-Ethylenedioxyphenyl)-5-fluoro-N4-(indazoline-6-yl)-2,4-pyrimidinediamine 7.3.1020 R935262 5-Fluoro-N2-(3-hydroxyphenyl)-N4-(indazoline-6-yl)-2,4-pyrimidinediamine 7.3.1021 R935263 N2-(3-Chloro-4-hydroxy-3-methylphenyl)-5-fluoro-N4-[4H-imidazo[2,1-c][1,4]-benzoxazin-8-yl]- 2,4-pyrimidinediamine 7.3.1022 R935264 N2-(3-Chloro-4-hydroxy-3-methylphenyl)-5-fluoro-N4-(indazoline-6-yl)-2,4-pyrimidinediamine 7.3.1023 R935266 5-Fluoro-N4-(indazoline-5-yl)-N2-(4-isopropoxyphenyl)-2,4-pyrimidinediamine 7.3.1024 R935267 N2-(3,4-Ethyelenedioxyphenyl)-5-fluoro-N4-(indazoline-5-yl)-2,4-pyrimidinediamine 7.3.1025 R935268 5-Fluoro-N2-(3-hydroxyphenyl)-N4-(indazoline-5-yl)-2,4-pyrimidinediamine 7.3.1026 R935269 5-Fluoro-N4-(indazoline-5-yl)-N2-[3-(methoxycarbonyl methyleneoxy)phenyl]-2,4- pyrimidinediamine 7.3.1027 R935270 5-Fluoro-N4-(indazoline-5-yl)-N2-(indazoline-6-yl)-2,4-pyrimidinediamine 7.3.1028 R935271 5-Fluoro-N4-[4H-imidazo[2,1-c][1,4]-benzoxazin-8-yl]-N2-[3-(N- methylaminocarbonylmethyleneoxy)phenyl]-2,4-pyrimidinediamine 7.3.1029 R935276 5-Fluoro-N2-(4-isopropoxyphenyl)-N4-(1H-pyrrol-1-yl)-2,4-pyrimidinediamine 7.3.1030 R935277 N2-(3,4-Ethylenedioxyphenyl)-5-Fluoro-N4-(1H-pyrrol-1-yl)-2,4-pyrimidinediamine 7.3.1031 R935278 5-Fluoro-N2-(3-hydroxyphenyl)-N4-(1H-pyrrol-1-yl)-2,4-pyrimidinediamine 7.3.1032 R935279 5-Fluoro-N4-(indazoline-5-yl)-N2-[3-(N-methylaminocarbonylmethyleneoxy)phenyl]-2,4- pyrimidinediamine 7.3.1033 R935280 5-Fluoro-N2-[3-(methoxycarbonylmethyleneoxy)phenyl]-N4-(1H-pyrrol-1-yl)-2,4- pyrimidinediamine 7.3.1034 R935281 5-Fluoro-N2-[3-(N-methylaminocarbonylmethyleneoxy)phenyl]-N4-(1H-pyrrol-1-yl)-2,4- pyrimidinediamine 7.3.1035 R935286 N2-[1-(2-ethoxycarbonylethyl)indazoline-6-yl]-N4-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4- pyrimidinediamine 7.3.1036 R935287 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[1-(3-hydroxypropyl)indazoline-6-yl]-2,4- pyrimidinediamine 7.3.1037 R935288 N2-(3,4-Ethylenedioxyphenyl)-5-fluoro-N4-[1-[2(N-methylaminocarbonyl)ethyl]-indazoline-6-yl]- 2,4-pyrimidinediamine 7.3.1038 R935289 N4-[1-(2-Ethoxycarbonylethyl)indazoline-6-yl]-5-fluoro-N2-(isopropoxyphenyl)-2,4- pyrimidinediamine 7.3.1039 R935290 5-Fluoro-N2-[1-(3-hydroxypropyl)indazoline-6-yl]-N4-(4-isopropoxyphenyl)-2,4-pyrimidinediamine 7.3.1040 R935291 5-Fluoro-N4-(4-isopropoxyphenyl)-N2-[1-[2(N-methylamino)carbonyl]ethyl-indazoline-6-yl]-2,4- pyrimidinediamine 7.3.1041 R935292 N4-[1-(2-Ethoxycarbonylethyl)indazoline-6-yl]-5-fluoro-N2-(3-hydroxyphenyl)-2,4- pyrimidinediamine 7.3.1042 R935293 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[1-(3-hydroxypropyl)indazoline-6-yl]-2,4-pyrimidinediamine 7.3.1043 R935294 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[1-[2-(N-methylaminocarbonyl)ethyl]-indazoline-6-yl]-2,4- pyrimidinediamine 7.3.1044 R935295 N4-[1-(2-Ethoxycarbonylethyl)indazoline-6-yl]-5-fluoro-N2-(2-methoxycarbonylbenzofur-5-yl)-2,4- pyrimidinediamine 7.3.1045 R935297 5-Fluoro-N4-[2-(N-methylaminocarbonyl)benzofuran-5-yl]-N2-[1-[2(N-methylaminocarbonyl)ethyl]- indazoline-6-yl]-2,4-pyrimidinediamine 7.3.1046 R935298 5-Fluoro-N4-(4-isopropoxyphenyl)-N2-(2-methyl-indazoline-5-yl)-2,4-pyrimidinediamine 7.3.1047 R935299 5-Fluoro-N4-(3-hydroxyphenyl)-N2-(2-methy-indazoline-5-yl)-2,4-pyrimidinediamine 7.3.1048 R935300 N4-(3,4-Ethyelenedioxyphenyl)-5-fluoro-N2-(2-methy-indazoline-5-yl)-2,4-pyrimidinediamine 7.3.1049 R935301 N2-[1-(2-Ethoxycarbonylethyl)indazoline-5-yl]-N4-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4- pyrimidinediamine 7.3.1050 R935302 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[1-(3-hydroxypropyl)indazoline-5-yl]-2,4- pyrimidinediamine 7.3.1051 R935303 N4-[1-(2-Ethoxycarbonylethyl)indazoline-5-yl]-5-fluoro-N2-(3-hydroxyphenyl)-2,4- pyrimidinediamine 7.3.1052 R935304 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[1-(3-hydroxypropyl)indazoline-5-yl]-2,4-pyrimidinediamine 7.3.1053 R935305 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[1-[2(N-methylaminocarbonyl)ethyl]-indazoline-5-yl]-2,4- pyrimidinediamine 7.3.1054 R935306 N4-[1-(2-Ethoxycarbonylethyl)indazoline-5-yl]-5-fluoro-N2-(4-isopropoxyphenyl)-2,4- pyrimidinediamine 7.3.1055 R935307 5-Fluoro-N2-[1-(3-hydroxypropyl)indazoline-5-yl]-N4-(4-isopropoxyphenyl)-2,4-pyrimidinediamine 7.3.1056 R935308 5-Fluoro-N4-(2-hydroxymethylbenzofur-5-yl)-N2-[1-(3-hydroxypropyl)indazoline-6-yl]-2,4- pyrimidinediamine 7.3.1057 R935309 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[1-[2(N-methylaminocarbonyl)ethyl]-indazoline-5-yl]- 2,4-pyrimidinediamine 7.3.1058 R935310 5-Fluoro-N4-(4-isopropoxyphenyl)-N2-[1-[2(N-methylaminocarbonyl)ethyl]-indazoline-5-yl]-2,4- pyrimidinediamine 7.3.1059 R935320 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[1-(2-methoxy-4-carbomethoxybenzyl)indazoline-6-yl]- 2,4-pyrimidinediamine 7.3.1060 R935321 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[1-(2-methoxy-4-carbomethoxybenzyl)indazoline-6-yl]-2,4- pyrimidinediamine 7.3.1061 R935322 5-Fluoro-N4-(4-isopropoxyphenyl)-N2-[1-[2-methoxy-4-(o- toluylsulfonamidocarboxy)benzyl]indazoline-6-yl]-2,4-pyrimidinediamine 7.3.1062 R935323 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N4-[1-[2-methoxy-4-(o- toluylsulfonamidocarboxy)benzyl]indazoline-6-yl]-2,4-pyrimidinediamine 7.3.1063 R935324 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[1-[2-methoxy-4-(o- toluylsulfonamidocarboxy)benzyl]indazoline-6-yl]-2,4-pyrimidinediamine 7.3.1064 R935336 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[2-(2-methoxy-4-carbomethoxybenzyl)indazoline-6-yl]- 2,4-pyrimidinediamine 7.3.1065 R935337 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[2-(2-methoxy-4-carbomethoxybenzyl)indazoline-6-yl]-2,4- pyrimidinediamine 7.3.1066 R935338 5-Fluoro-N4-(4-isopropoxyphenyl)-N2-[2-(2-methoxy-4-carbomethoxybenzyl)indazoline-6-yl]-2,4- pyrimidinediamine 7.3.1067 R935339 N4-(3,4-Ethylenedioxyphenyl)-5-fluoro-N2-[1-[2-methoxy-4-(o- toluylsulfonamidocarboxy)benzyl]indazoline-5-yl]-2,4-pyrimidinediamine 7.3.1068 R935340 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[1-[2-methoxy-4-(o- toluylsulfonamidocarboxy)benzyl]indazoline-5-yl]-2,4-pyrimidinediamine 7.3.1069 R935351 N4-(4-Chlorophenyl)-5-fluoro-N2-(1-methyl-indazoline-5-yl)-2,4-pyrimidinediamine 7.3.1070 R935352 N4-(4-Chlorophenyl)-5-fluoro-N2-(indazoline-6-yl)-2,4-pyrimidinediamine 7.3.1071 R935353 N4-(4-Chlorophenyl)-N2-[1-(2-ethoxycarbonylethyl)indazoline-5-yl]-5-fluoro-2,4-pyrimidinediamine 7.3.1072 R935354 N4-(3-Chloro-4-trifluoromethoxy-phenyl)-N2-[1-(2-ethoxycarbonylethyl)indazoline-5-yl]-5-fluoro- 2,4-pyrimidinediamine 7.3.1073 R935355 N4-(3,4-Dichlorophenyl)-5-fluoro-N2-(1-methylindazoline-5-yl)-2,4-pyrimidinediamine 7.3.1074 R935356 5-Fluoro-N2-(1-methylindazoline-5-yl)-N4-(3-trifluoromethoxypheny)-2,4-pyrimidinediamine 7.3.1075 R935357 N4-(3,4-Difluoromethylendioxyphenyl)-5-fluoro-N2-(1-methylindazoline-5-yl)-2,4- pyrimidinediamine 7.3.1076 R935358 N4-(3,4-Difluorophenyl)-5-fluoro-N2-(1-methylindazoline-5-yl)-2,4-pyrimidinediamine 7.3.1077 R935359 N4-(3-chloro-4-trifluoromethoxyphenyl)-5-fluoro-N2-(1-methylindazoline-5-yl)-2,4- pyrimidinediamine 7.3.1078 R935360 N2-[1-(2-Ethoxycarbonylethyl)indazoline-5-yl]-5-fluoro-N4-(3-trifluoromethoxyphenyl)-2,4- pyrimidinediamine 7.3.1079 R935361 5-Fluoro-N2-[1-[2(N-methylaminocarbonyl)ethyl]indazoline-5-yl]-N4-(3-trifluoromethoxyphenyl)- 2,4-pyrimidinediamine 7.3.1080 R935362 5-Fluoro-N2-[1-(3-hydroxypropyl)indazoline-5-yl]-N4-(3-trifluoromethoxyphenyl)-2,4- pyrimidinediamine 7.3.1081 R935363 5-Fluoro-N2-(indazoline-6-yl)-N4-(3-trifluoromethoxyphenyl)-2,4-pyrimidinediamine 7.3.1082 R935364 5-Fluoro-N2-(indazoline-5-yl)-N4-(3-trifluoromethoxyphenyl)-2,4-pyrimidinediamine 7.3.1083 R935365 N4-(4-Chlorophenyl)-5-fluoro-N2-(indazoline-5-yl)-2,4-pyrimidinediamine 7.3.1084 R935366 N4-(3-Chloro-4-trifluoromethoxyphenyl)-5-fluoro-N2-(indazoline-5-yl)-2,4-pyrimidinediamine 7.3.1085 R935367 5-Fluoro-N4-[4-(3-phenyl-1,2,4-oxadiazol-5-yl)methyleneoxyphenyl]-N2-(3,4,5-trimethoxyphenyl)- 2,4-pyrimidinediamine 7.3.1086 R935368 N4-(3-Chloro-4-trifluoromethoxyphenyl)-5-fluoro-N2-(indazoline-6-yl)-2,4-pyrimidinediamine 7.3.1087 R935369 N4-(3-Chloro-4-trifluoromethoxyphenyl)-5-fluoro-N2-[1-[2(N- methylaminocarbonyl)ethyl]indazoline-5-yl]-2,4-pyrimidinediamine 7.3.1088 R935370 N4-(3-Chloro-4-trifluoromethoxyphenyl)-5-fluoro-N2-[1-(3-hydroxypropyl)indazoline-5-yl]-2,4- pyrimidinediamine 7.3.1089 R935371 N4-(3,4-Dichlorophenyl)-5-fluoro-N2-(indazoline-5-yl)-2,4-pyrimidinediamine 7.3.1090 R935372 N4-(3,4-Dichlorophenyl)-5-fluoro-N2-(indazoline-6-yl)-2,4-pyrimidinediamine 7.3.1091 R935373 N4-(3,4-Difluoromethylendioxyphenyl)-5-fluoro-N2-(indazoline-5-yl)-2,4-pyrimidinediamine 7.3.1092 R935374 N4-(3,4-Difluoromethylendioxyphenyl)-5-fluoro-N2-(indazoline-6-yl)-2,4-pyrimidinediamine 7.3.1093 R935375 N4-(6-Chloro-3-pyridyl)-5-fluoro-N2-(1-methylindazoline-5-yl)-2,4-pyrimidinediamine 7.3.1094 R935376 N4-(6-Chloro-3-pyridyl)-5-fluoro-N2-(indazoline-5-yl)-2,4-pyrimidinediamine 7.3.1095 R935377 N4-(6-Chloro-3-pyridyl)-N2-[1-(2-ethoxycarbonylethyl)indazoline-5-yl]-5-fluoro-2,4- pyrimidinediamine 7.3.1096 R935378 N4-(6-Chloro-3-pyridyl)-5-fluoro-N2-[1-[2(N-methylaminocarbonyl)ethyl]indazoline-5-yl]-2,4- pyrimidinediamine 7.3.1097 R935379 N4-(6-Chloro-3-pyridyl)-5-fluoro-N2-[1-(3-hydroxypropyl)indazoline-5-yl]-2,4-pyrimidinediamine 7.3.1098 R935380 N4-6-Dimethoxy-3-pyridyl)-5-fluoro-N2-[1-methylindazoline-5-yl]-2,4-pyrimidinediamine 7.3.1099 R008951 N2,N4-Bis (3-chlorophenyl)-5-Fluoro-2,4-pyrimidinediamine R067962 R026209 7.3.1099 R008952 N2,N4-Bis (2,5-dimethylphenyl)-5-Fluoro-2,4-pyrimidinediamine R067963 7.3.1099 R008953 N2,N4-Bis (3,4-dimethylphenyl)-5-Fluoro-2,4-pyrimidinediamine R067964 7.3.1099 R008955 N2,N4-Bis (2-methoxyphenyl)-5-Fluoro-2,4-pyrimidinediamine R081166 7.3.1099 R008956 N2,N4-Bis (2,4-dimethylphenyl)-5-Fluoro-2,4-pyrimidinediamine R070791 7.3.1099 R008958 N2,N4-Bis (3-bromophenyl)-5-Fluoro-2,4-pyrimidinediamine 7.3.1099 R088814 N2,N4-Bis (4-methoxyphenyl)-5-Fluoro-2,4-pyrimidinediamine R926017 7.3.1099 R088815 N2,N4-Bis (2-chlorophenyl)-5-Fluoro-2,4-pyrimidinediamine 7.3.1099 R091880 N2,N4-Bisphenyl-5-Fluoro-2,4-pyrimidinediamine 7.3.1099 R092788 N2,N4-Bis (3-methylphenyl)-5-Fluoro-2,4-pyrimidinediamine 7.3.1099 R920846 N2-(3-hydroxyplhenyl)-N4-[4-(tetrazol-5-yl)methoxyphenyl)]-5-trifluoromethyl-2,4- pyrimidinediamine 7.3.1099 R070153 N2,N4-Bis (4-chlorophenyl)-5-Fluoro-2,4-pyrimidinediamine 7.3.1099 R070790 N2,N4-Bis (4-ethoxyphenyl)-5-Fluoro-2,4-pyrimidinediamine R926036 7.3.1099 R926736 N2-(3,4-ethylenedioxyphenyl)-N4-[3-(N-methylaminomethyleneoxyphenyl)]-5-trifluoromethyl-2,4- pyrimidinediamine and N2-[3-(N-methylaminomethyleneoxyphenyl)]-N4-(3,4-ethylenedioxyphenyl)-5-trifluoromethyl-2,4- pyrimidinediamine 7.3.1099 R935117 N2,N4-Bis (3-carboxymethylphenyl)-5-Fluoro-2,4-pyrimidinediamine 7.3.1099 R926593 N2,N4-Bis (2-methoxycarbonylindol-6-yl)-5-Fluoro-2,4-pyrimidinediamine 7.3.1099 R950189 N2-(3,4-ethylenedioxyphenyl)-N4-methyl-5-Fluoro-2,4-pyrimidinediamine 7.3.1099 R950216 N2-(3-hydroxyphenyl)-N4-(3-ethoxymethyleneoxyphenyl)-5-Fluoro-2,4-pyrimidinediamine 7.3.1099 R950218 N2-(3-hydroxyphenyl)-N4-[3-(N-methylamino)carbonylmethyleneaminophenyl]-5-Fluoro-2,4- pyrimidinediamine 7.3.1100 7.3.1101 R926408 N2,N4,N6-Tris(3-hydroxyphenyl)-2,4,6-pyrimidinetriamine 7.3.1101 R926409 N2,N4,N6-Tris(3-hydroxyphenyl)-2,4,6-pyrimidinetriamine 7.3.1102 R926411 N2,N4-Bis(4-methoxycarbonylmethyleneoxyphenyl)-6-chloro-2,4-pyrimidinediamine 7.3.1103 R926245 N2,N4-Bis(3,4-ethylenedioxyphenyl)-6-chloro-2,4-pyrimidinediamine 7.3.1103 R926516 N2,N4,N6-Tris(3,4-ethylenedioxyphenyl)-2,4,6-pyrimidinetriamine 7.3.1104 7.3.1105 R926555 6-Chloro-N2-(4-ethoxycarbonylmethyleneoxyphenyl)-N4-(methoxycarbonylmethyl)-2,4- pyrimidinediamine 7.3.1106 R926467 N2,N4-Bis(3,4-ethylenedioxyphenyl)-5,6-dichloro-2,4-pyrimidinediamine 7.3.1107 R926569 N2,N4-Bis(4-ethoxycarbonylmethyleneoxyphenyl)-5,6-dichloro-2,4-pyrimidinediamine 7.3.1108 R926576 N2,N4-Bis(4-tert-butoxyoxycarbonylmethyleneoxyphenyl)-5,6-dichloro-2,4-pyrimidinediamine 7.3.1109 Reaction of 2,4,5,6-tetrachloropyrimidine with 3-hydroxyaniline 7.3.1109 R926590 N4-(3-Hydroxyphenyl)-2,5,6-trichloro-4-pyrimidineamine 7.3.1109 R926591 N2,N4-Bis(3-hydroxyphenyl)-5,6-dichloro-2,4-pyrimidinediamine 7.3.1109 R926592 N4,N6-Bis(3-hydroxyphenyl)-2,5-dichloro-4,6-pyrimidinediamine 7.3.1110 R926595 N2,N4-Bis(3-hydroxyphenyl)-5-chloro-6-thiomethyl-2,4-pyrimidinediamine 7.3.1111 R926475 N2,N4-Bis(3,4-ethyelenedioxyphenyl)-5-chloro-6-thiomethyl-2,4-pyrimidinediamine 7.3.1112 R926530 6-Chloro N4-(3-hydroxyphenyl)-4-pyrimidineamine 7.3.1113 R925784 N2,N4-Bis(3,4-ethylenedioxyphenyl)-5-phenyl-2,4-pyrimidinediamine 7.3.1114 R925785 N2,N4-Bis(3,4-ethylenedioxyphenyl)-5-(2-furanyl)-2,4-pyrimidinediamine 7.3.1115 R925786 N2,N4-Bis(3,4-ethylenedioxyphenyl)-5-(4-chlorophenyl)-2,4-pyrimidinediamine 7.3.1116 R925787 N2,N4-Bis(3,4-ethylenedioxyphenyl)-5-(3-chlorophenyl)-2,4-pyrimidinediamine 7.3.1117 R925813 N2,N4-Bis(3,4-ethylenedioxyphenyl)-5-(4-methoxycarbonylphenyl)-2,4-pyrimidinediamine 7.3.1118 R925816 N2,N4-Bis(3,4-ethylenedioxyphenyl)-5-(4-hydroxyphenyl)-2,4-pyrimidinediamine 7.3.1119 R925783 N2,N4-Bis(3-hydroxyphenyl)-5-phenyl-2,4-pyrimidinediamine 7.3.1120 R925788 N2,N4-Bis(3-hydroxyphenyl)-5-(3,4-methylenedioxyphenyl)-2,4-pyrimidinediamine 7.3.1121 R925811 N2,N4-Bis(3,4-ethylenedioxyphenyl)-6-phenyl-2,4-pyrimidinediamine 7.3.1122 R925812 N2,N4-Bis(3-hydroxyphenyl)-6-phenyl-2,4-pyrimidinediamine 7.3.1123 R926747 N2-(3-Aminocarbonylmethyleneoxyphenyl)-N4-(3,4-ethylenedioxyphenyl)-5-fluoro-2,4- pyrimidinediamine 7.3.1124 R926461 N2,N4-Bis(3-sodiumphenoxy)-5-fluoro-2,4-pyrimidinediamine 7.3.1125 R945169 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[4-(1,4,5,6-tetrahydro-2-pyrimidyl)methyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.1126 R926702 5-Fluoro-N4-(3-hydroxyphenyl)-N2-[4-[(4,4-dimethyl-3-oxazolin-2-yl)methyleneoxy]phenyl]-2,4- pyrimidinediamine 7.3.1127 R950290 N4-(3-Hydroxycarbonyl-4-hydroxyphenyl)-5-fluoro-N2-[3-ethoxycarbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.1128 R950291 N4-(3-Hydroxycarbonyl-4-hydroxyphenyl)-5-fluoro-N2-[3-hydroxycarbonylmethyleneoxyphenyl]- 2,4-pyrimidinediamine 7.3.1129 R950293 N4-(3-Methoxycarbonyl-4-hydroxyphenyl)-5-fluoro-N2-[3-ethoxycarbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.1130 R950294 N4-(4-Methoxy-3,4-dihydro-2H-1-benzopyran-6-yl)-5-fluoro-N2-[3- ethoxycarbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.1131 R950295 N4-(4-Methoxy-3,4-dihydro-2H-1-benzopyran-6-yl)-5-fluoro-N2-[3- methoxycarbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.1132 R950296 N4-(4-Ethoxy-3,4-dihydro-2H-1-benzopyran-6-yl)-5-fluoro-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.1133 R950344 N4-(4-Hydroxycarbonylethyleneoxyphenyl)-5-fluoro-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.1134 R950345 N4-(2,3-Dihydro-4-benzypyranon-6-yl)-5-fluoro-N2-[3-(N-methylamino)carbonyl methyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.1135 R950346 N4-(4-Methoxycarbonylethyleneoxyphenyl)-5-fluoro-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.1136 R950347 N4-(4-Hydroxyphenyl)-5-fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.1137 R950348 N4-(2,3-Dihydro-4-oxime-benzypyran-6-yl)-5-fluoro-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.1138 R950349 N4-(4-Hydroxy-3,4-dihydro-2H-1-benzopyran-6-yl)-5-fluoro-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.1139 R950356 N4-(2,3-Dihydro-4-O-methyloxime-benzypyran-6-yl)-5-fluoro-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.1140 R950368 N4-(4-Amino-3,4-dihydro-2H-1-benzopyran-6-yl)-5-fluoro-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.1141 R950371 N4-(3-Methylcarbonylphenyl)-5-fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.1142 R950372 N4-(3-Phenylcarbonylphenyl)-5-fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.1143 R950373 N4-(3-Methyloximephenyl)-5-fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.1144 R950374 N4-(3-Phenyloximephenyl)-5-fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.1145 R950376 N2,N4-Bis(3-methylcarbonylphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.1146 R950377 N2,N4-Bis(3-phenylcarbonylphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.1147 R950378 N2,N4-Bis(2,3-dihydro-4-benzypyranon-6-yl)-5-fluoro-2,4-pyrimidinediamine 7.3.1148 R950379 N2,N4-Bis(3-methyloximephenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.1149 R950380 N2,N4-Bis(3-phenyloximephenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.1150 R950381 N2,N4-Bis(2,3-dihydro-4-oxime-benzypyran-6-yl)-5-fluoro-2,4-pyrimidinediamine 7.3.1151 R950382 N4-(4-Acetyloxy-3,4-dihydro-2H-1-benzopyran-6-yl)-5-fluoro-N2-[3-(N-methylamino)carbonyl methyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.1152 R950383 N4-(4-Azido-3,4-dihydro-2H-1-benzopyran-6-yl)-5-fluoro-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.1153 R950385 N4-(4-Benzypyran-6-yl)-5-fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.1154 R950386 N4-(3-Hydroxymethylen-4-methoxyphenyl)-5-fluoro-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.1155 R950388 N4-(3-Amino-4-ethoxyphenyl)-5-fluoro-N2-[3-(N-methylamino)carbonylmethyleneoxyphenyl]-2,4- pyrimidinediamine 7.3.1156 R950389 N4-(4-Ethoxy-3-hydroxysulfonylphenyl)-5-fluoro-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.1157 R950391 N2,N4-Bis(3-methoxycarbonyl-4-trifluoromethoxyphenyl)-5-fluoro-2,4-pyrimidinediamine 7.3.1158 R950392 N4-(3-Methoxycarbonyl-4-trifluoro methoxyphenyl)-5-fluoro-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.1159 R950393 N4-(4-Acetylamino-3,4-dihydro-2H-1-benzopyran-6-yl)-5-fluoro-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine 7.3.1160 R950399 N4-(4-Amino-3,4-dihydro-2H-1-benzopyran-6-yl)-5-fluoro-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine HCl salt 7.3.1161 R950400 N4-(4-Amino-3,4-dihydro-2H-1-benzopyran-6-yl)-5-fluoro-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine succinic acid salt 7.3.1162 R950401 N4-(4-Amino-3,4-dihydro-2H-1-benzopyran-6-yl)-5-fluoro-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine maleic acid salt 7.3.1163 R950402 N4-(4-Amino-3,4-dihydro-2H-1-benzopyran-6-yl)-5-fluoro-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine fumaric acid salt 7.3.1164 R950403 N4-(4-Amino-3,4-dihydro-2H-1-benzopyran-6-yl)-5-fluoro-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine citric acid salt 7.3.1165 R950404 N4-(4-Amino-3,4-dihydro-2H-1-benzopyran-6-yl)-5-fluoro-N2-[3-(N- methylamino)carbonylmethyleneoxyphenyl]-2,4-pyrimidinediamine HNO₃ salt

7.4 Synthesis of Prodrugs

Exemplary prodrugs according to structural formula (II) were synthesized as described below.

7.4.1 N-2(4)-Acetyl-N2,N4-bis(3,4-ethylenedioxyphenyl)-5-fluoro-2,4-pyrimidinediamine (R926233)

A mixture of N2,N4-bis(3,4-ethylenedioxyphenyl)-5-fluoro-2,4-pyrimidinediamine, acetyl chloride (4 equivalents), pyridine (4 equivalents) in CH₂Cl₂ was stirred at room temperature for 48 h. After an aqueous work up the residue was chromatographed on silica gel to give N-2(4)-acetyl-N2,N4-bis(3,4-ethylenedioxyphenyl)-5-fluoro-2,4-pyrimidinediamine. ¹H NMR (CDCl₃): δ 8.23 (d, 1H, J=5.4 Hz), 7.03 (d, 1H, J=2.4 Hz), 7.90-7.80 (m, 3H), 6.76 (m, 2H), 4.28 (bs, 4H), 2.10 (s, 3H); ¹⁹F NMR (CDCl₃); −42125; LCMS: ret. time: 27.94 min.; purity: 99%; MS (m/e): 439 (MH⁺).

7.4.2 N2,N4-Bis(3-N-acetylaminophenyl)-5-fluoro-N2,N4-pyrimidinediacetylamine (R950244)

N2,N4-Bis(3-aminophenyl)-5-fluoro-2,4-pyrimidinediamine, dimethylaminopyridine (DMAP) and acetic anhydride were refluxed in pyridine for 1 hour. The mixture was cooled to room temperature, concentrated, and the residue was subjected to column chromatography on silica gel (CHCl₃:Acetone, 2:1) to give N2,N4-bis(3-N-acetylaminophenyl)-5-fluoro-N2,N4-pyrimidinediacetylamine. LCMS: ret. time: 17.03 min.; purity: 87.0%; MS (m/e): 478.89 (MH⁺).

7.4.3 N4-(3-N,N-Diacetylaminophenyl)-N2-(3-N-acetylaminopheny)-5-fluoro-N2,N4-pyrimidinediacetylamine (R950245)

N2,N4-Bis(3-aminophenyl)-5-fluoro-2,4-pyrimidinediamine, dimethylaminopyridine (DMAP) and acetic anhydride were refluxed in pyridine for 1 hour. The mixture was cooled to room temperature, concentrated, and the residue was subjected to column chromatography on silica gel (CHCl₃:Acetone, 2:1) to give N4-(3-N,N-diacetylaminophenyl)-N2-(3-N-acetylaminopheny)-5-fluoro-N2,N4-pyrimidinediacetylamine. LCMS: ret. time: 19.27 min.; purity: 92.6%; MS (m/e): 521.01 (MH⁺).

7.4.4 N4-(3-N-Acetylaminophenyl)-N2-(3-N,N-diacetylaminopheny)-5-fluoro-N2,N4-pyrimidinediacetylamine (R950246)

N2,N4-Bis(3-aminophenyl)-5-fluoro-2,4-pyrimidinediamine, dimethylaminopyridine (DMAP) and acetic anhydride were refluxed in pyridine for 1 hour. The mixture was cooled to room temperature, concentrated, and the residue was subjected to column chromatography on silica gel (CHCl₃:Acetone, 2:1) to give N4-[3-N-acetylaminophenyl]-N2-(3-N,N-diacetylaminopheny)-5-fluoro-N2,N4-pyrimidinediacetylamine. LCMS: ret. time: 18.89 min.; purity: 83.0%; MS (m/e): 520.97 (MH⁺).

7.5 The 2,4-Pyrimidinediamine Compounds of the Invention Inhibit FcεRI Receptor-Mediated Degranulation

The ability of the 2,4-pyrimidinediamine compounds of the invention to inhibit IgE-induced degranulation was demonstrated in a variety of cellular assays with cultured human mast cells (CHMC) and/or mouse bone marrow derived cells (BMMC). Inhibition of degranulation was measured at both low and high cell density by quantifying the release of the granule specific factors tryptase, histamine and hexosaminidase. Inhibition of release and/or synthesis of lipid mediators was assessed by measuring the release of leukotriene LTC4 and inhibition of release and/or synthesis of cytokines was monitored by quantifying TNF-α, IL-6 and IL-13. Tryptase and hexosaminidase were quantified using fluorogenic substrates as described in their respective examples. Histamine, TNFα, IL-6, IL-13 and LTC4 were quantified using the following commercial ELISA kits: histamine (Immunotech #2015, Beckman Coulter), TNFα (Biosource #KHC3011), IL-6 (Biosource #KMC0061), IL-13 (Biosource #KHC0132) and LTC4 (Cayman Chemical #520211). The protocols of the various assays are provided below.

7.5.1 Culturing of Human Mast and Basophil Cells

Human mast and basophil cells were cultured from CD34-negative progenitor cells as described below (see also the methods described in copending U.S. application Ser. No. 10/053,355, filed Nov. 8, 2001, the disclosure of which is incorporated herein by reference).

7.5.1.1 Preparation of STEMPRO-34 Complete Medium

To prepare STEMPRO-34 complete medium (“CM”), 250 mL STEMPRO-34™ serum free medium (“SFM”; GibcoBRL, Catalog No. 10640) was added to a filter flask. To this was added 13 mL STEMPRO-34 Nutrient Supplement (“NS”; GibcoBRL, Catalog No. 10641) (prepared as described in more detail, below). The NS container was rinsed with approximately 10 mL SFM and the rinse added to the filter flask. Following addition of 5 mL L-glutamine (200 mM; Mediatech, Catalog No. MT 25-005-CI and 5 mL 100× penicillin/streptomycin (“pen-strep”; HyClone, Catalog No. SV30010), the volume was brought to 500 mL with SFM and the solution was filtered.

The most variable aspect of preparing the CM is the method by which the NS is thawed and mixed prior to addition to the SFM. The NS should be thawed in a 37° C. water bath and swirled, not vortexed or shaken, until it is completely in solution. While swirling, take note whether there are any lipids that are not yet in solution. If lipids are present and the NS is not uniform in appearance, return it to the water bath and repeat the swirling process until it is uniform in appearance. Sometimes this component goes into solution immediately, sometimes after a couple of swirling cycles, and sometimes not at all. If, after a couple of hours, the NS is still not in solution, discard it and thaw a fresh unit. NS that appears non-uniform after thaw should not be used.

7.5.1.2 Expansion of CD34+ Cells

A starting population of CD34-positive (CD34+) cells of relatively small number (1-5×10⁶ cells) was expanded to a relatively large number of CD34-negative progenitor cells (about 24×10⁹ cells) using the culture media and methods described below. The CD34+ cells (from a single donor) were obtained from Allcells (Berkeley, Calif.). Because there is a degree of variation in the quality and number of CD34+ cells that Allcells typically provides, the newly delivered cells were transferred to a 15 mL conical tube and brought up to 10 mL in CM prior to use.

On day 0, a cell count was performed on the viable (phase-bright) cells and the cells were spun at 1200 rpm to pellet. The cells were resuspended to a density of 275,000 cells/mL with CM containing 200 ng/mL recombinant human Stem Cell Factor (“SCF”; Peprotech, Catalog No. 300-07) and 20 ng/mL human flt-3 ligand (Peprotech, Catalog No. 300-19) (“CM/SCF/flt-3 medium”). On about day 4 or 5, the density of the culture was checked by performing a cell count and the culture was diluted to a density of 275,000 cells/mL with fresh CM/SCF/flt-3 medium. On about day 7, the culture was transferred to a sterile tube and a cell count was performed. The cells were spun at 1200 rpm and resuspended to a density of 275,000 cells/mL with fresh CM/SCF/flt-3 medium.

This cycle was repeated, starting from day 0, a total of 3-5 times over the expansion period.

When the culture is large and being maintained in multiple flasks and is to be resuspended, the contents of all of the flasks are combined into a single container prior to performing a cell count. This ensures that an accurate cell count is achieved and provides for a degree of uniformity of treatment for the entire population. Each flask is checked separately for contamination under the microscope prior to combining to prevent contamination of the entire population.

Between days 17-24, the culture can begin to go into decline (i.e., approximately 5-10% of the total number of cells die) and fail to expand as rapidly as before. The cells are then monitored on a daily basis during this time, as complete failure of the culture can take place in as little as 24 hours. Once the decline has begun, the cells are counted, spun down at 850 rpm for 15 minutes, and resuspended at a density of 350,000 cells/mL in CM/SCF/flt-3 medium to induce one or two more divisions out of the culture. The cells are monitored daily to avoid failure of the culture.

When greater than 15% cell death is evident in the progenitor cell culture and some debris is present in the culture, the CD34-negative progenitor cells are ready to be differentiated.

7.5.1.3 Differentiation of CD34-Negative Progenitor Cells into Mucosal Mast Cells

A second phase is performed to convert the expanded CD34-negative progenitor cells into differentiated mucosal mast cells. These mucosal cultured human mast cells (“CHMC”) are derived from CD34+ cells isolated from umbilical cord blood and treated to form a proliferated population of CD34-negative progenitor cells, as described above. To produce the CD43-negative progenitor cells, the resuspension cycle for the culture was the same as that described above, except that the culture was seeded at a density of 425,000 cells/mL and 15% additional media was added on about day four or five without performing a cell count. Also, the cytokine composition of the medium was modified such that it contained SCF (200 ng/mL) and recombinant human IL-6 (200 ng/mL; Peprotech, Catalog No. 200-06 reconstituted to 100 ug/mL in sterile 10 mM acetic acid) (“CM/SCF/IL-6 medium”).

Phases I and II together span approximately 5 weeks. Some death and debris in the culture is evident during weeks 1-3 and there is a period during weeks 2-5 during which a small percentage of the culture is no longer in suspension, but is instead attached to the surface of the culture vessel.

As during Phase I, when the culture is to be resuspended on day seven of each cycle, the contents of all flasks are combined into a single container prior to performing a cell count to ensure uniformity of the entire population. Each flask is checked separately for contamination under the microscope prior to combining to prevent contamination of the entire population.

When the flasks are combined, approximately 75% of the volume is transferred to the communal container, leaving behind about 10 mL or so in the flask. The flask containing the remaining volume was rapped sharply and laterally to dislodge the attached cells. The rapping was repeated at a right angle to the first rap to completely dislodge the cells.

The flask was leaned at a 45 degree angle for a couple of minutes before the remaining volume was transferred to the counting vessel. The cells were spun at 950 rpm for 15 min prior to seeding at 35-50 mL per flask (at a density of 425,000 cells/mL).

7.5.1.4 Differentiation of CD34-Negative Progenitor Cells into Connective Tissue-Type Mast Cells

A proliferated population of CD34-negative progenitor cells is prepared as above and treated to form a tryptase/chymase positive (connective tissue) phenotype. The methods are performed as described above for mucosal mast cells, but with the substitution of IL-4 for IL-6 in the culture medium. The cells obtained are typical of connective tissue mast cells.

7.5.1.5 Differentiation of CD34-Negative Progenitor Cells into Basophil Cells

A proliferated population of CD34-negative progenitor cells is prepared as described in Section 6.4.1.2, above, and used to form a proliferated population of basophil cells. The CD34-negative cells are treated as described for mucosal mast cells, but with the substitution of IL-3 (at 20-50 ng/mL) for IL-6 in the culture medium.

7.5.2 CHMC Low Cell Density IgE Activation: Tryptase and LTC4 Assays

To duplicate 96-well U-bottom plates (Costar 3799) add 65 ul of compound dilutions or control samples that have been prepared in MT [137 mM NaCl, 2.7 mM KCl, 1.8 mM CaCl₂, 1.0 mM MgCl₂, 5.6 mM Glucose, 20 mM Hepes (pH 7.4), 0.1% Bovine Serum Albumin, (Sigma A4503)] containing 2% MeOH and 1% DMSO. Pellet CHMC cells (980 rpm, 10 min) and resuspend in pre-warmed MT. Add 65 ul of cells to each 96-well plate. Depending on the degranulation activity for each particular CHMC donor, load 1000-1500 cells/well. Mix four times followed by a 1 hr incubation at 37° C. During the 1 hr incubation, prepare 6× anti-IgE solution [rabbit anti-human IgE (1 mg/ml, Bethyl Laboratories A80-109A) diluted 1:167 in MT buffer]. Stimulate cells by adding 25 ul of 6× anti-IgE solution to the appropriate plates. Add 25 ul MT to un-stimulated control wells. Mix twice following addition of the anti-IgE. Incubate at 37° C. for 30 minutes. During the 30 minute incubation, dilute the 20 mM tryptase substrate stock solution [(Z-Ala-Lys-Arg-AMC2TFA; Enzyme Systems Products, #AMC-246)] 1:2000 in tryptase assay buffer [0.1 M Hepes (pH 7.5), 10% w/v Glycerol, 10 uM Heparin (Sigma H4898) 0.01% NaN₃]. Spin plates at 1000 rpm for 10 min to pellet cells. Transfer 25 ul of supernatant to a 96-well black bottom plate and add 100 ul of freshly diluted tryptase substrate solution to each well. Incubate plates at room temperature for 30 min. Read the optical density of the plates at 355 nm/460 nm on a spectrophotometric plate reader.

Leukotriene C4 (LTC4) is also quantified using an ELISA kit on appropriately diluted supernatant samples (determined empirically for each donor cell population so that the sample measurement falls within the standard curve) following the supplier's instructions.

7.5.3 CHMC High Cell Density IgE Activation: Degranulation (Tryptase, Histamine), Leukotriene (LTC4), and Cytokine (TNFalpha, IL-13) Assays

Cultured human mast cells (CHMC) are sensitized for 5 days with IL-4 (20 ng/ml), SCF (200 ng/ml), IL-6 (200 ng/ml), and Human IgE (CP 1035K from Cortx Biochem, 100-500 ng/ml depending on generation) in CM medium. After sensitizing, cells are counted, pelleted (1000 rpm, 5-10 minutes), and resuspended at 1-2×10⁶ cells/ml in MT buffer. Add 100 ul of cell suspension to each well and 100 ul of compound dilutions. The final vehicle concentration is 0.5% DMSO. Incubate at 37° C. (5% CO₂) for 1 hour. After 1 hour of compound treatment, stimulate cells with 6× anti-IgE. Mix wells with the cells and allow plates to incubate at 37° C. (5% CO₂) for one hour. After 1 hour incubation, pellet cells (10 minutes, 1000 RPM) and collect 200 ul per well of the supernatant, being careful not to disturb pellet. Place the supernatant plate on ice. During the 7-hour step (see next) perform tryptase assay on supernatant that had been diluted 1:500. Resuspend cell pellet in 240 ul of CM media containing 0.5% DMSO and corresponding concentration of compound. Incubate CHMC cells for 7 hours at 37° C. (5% CO₂). After incubation, pellet cells (1000 RPM, 10 minutes) and collect 225 ul per well and place in −80° C. until ready to perform ELISAS. ELISAS are performed on appropriately diluted samples (determined empirically for each donor cell population so that the sample measurement falls within the standard curve) following the supplier's instructions.

7.5.4 BMMC High Cell Density IgE Activation: Degranulation (Hexosiminidase, Histamine), Leukotriene (LTC4), and Cytokine (TNFalpha, IL-6) Assays 7.5.4.1 Preparation of WEHI-Conditioned Medium

WEHI-conditioned medium was obtained by growing murine myelomonocytic WEHI-3B cells (American Type Culture Collection, Rockville, Md.) in Iscove's Modified Eagles Media (Mediatech, Hernandon, Va.) supplemented with 10% heat-inactivated fetal bovine serum (FBS; JRH Biosciences, Kansas City, Mo.), 50 μM 2-mercaptoethanol (Sigma, St. Louis, Mo.) and 100 IU/mL penicillin-steptomycin (Mediatech) in a humidified 37° C., 5% CO₂/95% air incubator. An initial cell suspension was seeded at 200,000 cells/mL and then split 1:4 every 3-4 days over a period of two weeks. Cell-free supernatants were harvested, aliquoted and stored at −80° C. until needed.

7.5.4.2 Preparation of BMMC Medium

BMMC media consists of 20% WEHI-conditioned media, 10% heat-inactivated FBS (JHR Biosciences), 25 mM HEPES, pH7.4 (Sigma), 2 mM L-glutamine (Mediatech), 0.1 mM non-essential amino acids (Mediatech), 1 mM sodium pyruvate (Mediatech), 50 μM 2-mercaptoethanol (Sigma) and 100 IU/mL penicillin-streptomycin (Mediatech) in RPMI 1640 media (Mediatech). To prepare the BMMC Media, all components are added to a sterile IL filter unit and filtered through a 0.2 μm filter prior to use.

7.5.4.3 Protocol

Bone marrow derived mast cells (BMMC) are sensitized overnight with murine SCF (20 ng/ml) and monoclonal anti-DNP (10 ng/ml, Clone SPE-7, Sigma # D-8406) in BMMC media at a cell density of 666×10³ cells/ml. After sensitizing, cells are counted, pelleted (1000 rpm, 5-10 minutes), and resuspended at 1-3×10⁶ cells/ml in MT buffer. Add 100 ul of cell suspension to each well and 100 ul of compound dilutions. The final vehicle concentration is 0.5% DMSO. Incubate at 37° C. (5% CO₂) for 1 hour. After 1 hour of compound treatment, stimulate cells with 6× stimulus (60 ng/ml DNP-BSA). Mix wells with the cells and allow plates to incubate at 37° C. (5% CO₂) for one hour. After 1 hour incubation, pellet cells (10 minutes, 1000 RPM) and collect 200 ul per well of the supernatant, being careful not to disturb pellet, and transfer to a clean tube or 96-well plate. Place the supernatant plate on ice. During the 4-5 hour step (see next) perform the hexosiminidase assay. Resuspend cell pellet in 240 ul WEI-conditioned media containing 0.5% DMSO and corresponding concentration of compound. Incubate BMMC cells for 4-5 hours at 37° C. (5% CO₂). After incubation, pellet cells (1000 RPM, 10 minutes) and collect 225 ul per well and place in −80° C. until ready to perform ELISAS. ELISAS are performed on appropriately diluted samples (determined empirically for each donor cell population so that the sample measurement falls within the standard curve) following the supplier's instructions.

Hexosaminidase assay: In a solid black 96-well assay plate, add 50 uL hexosaminidase substrate (4-methylumbelliferyl-N-acetyl-β-D-glucosaminide; 2 mM) to each well. Add 50 uL of BMMC cell supernatant (see above) to the hexoseaminidase substrate, place at 37° C. for 30 minutes and read the plate at 5, 10, 15, and 30 minutes on a spectrophotometer.

7.5.5 Basophil IgE or Dustmite Activation: Histamine Release Assay

The basophil activation assay was carried out using whole human peripheral blood from donors allergic to dust mites with the majority of the red blood cells removed by dextran sedimentation. Human peripheral blood was mixed 1:1 with 3% dextran T500 and RBCs were allowed to settle for 20-25 min. The upper fraction was diluted with 3 volumes of D-PBS and cells were spun down for 10 min at 1500 rpm, RT. Supernatant was aspirated and cells were washed in an equal volume MT-buffer. Finally, cells were resuspended in MT-buffer containing 0.5% DMSO in the original blood volume. 80 uL cells were mixed with 20 uL compound in the presence of 0.5% DMSO, in triplicate, in a V-bottom 96-well tissue culture plate. A dose range of 8 compound concentrations was tested resulting in a 10-point dose response curve including maximum (stimulated) and minimum (unstimulated) response. Cells were incubated with compound for 1 hour at 37° C., 5% CO₂ after which 20 uL of 6× stimulus [1 ug/mL anti-IgE (Bethyl Laboratories) 667 au/mL house dustmite (Antigen Laboratories)] was added. The cells were stimulated for 30 minutes at 37° C., 5% CO₂. The plate was spun for 10 min at 1500 rpm at room temperature and 80 uL the supernatant was harvested for histamine content analysis using the histamine ELISA kit supplied by Immunotech. The ELISA was performed according to supplier's instructions.

7.5.6 Results

The results of low density CHMC assays (Section 6.4.3), the high density BMMC assays (Section 6.4.5) and the basophil assays (Section 6.4.6) are provided in TABLE 1. The results of the high density CHMC assays (Section 6.4.4) are provided in TABLE 2. In TABLES I and 2, all reported values are IC₅₀s (in μM). A value of “9999” indicates an IC₅₀>10 μM, with no measurable activity at a 10 μM concentration. Most compounds tested had IC₅₀s of less than 10 μM with many exhibiting IC₅₀s in the sub-micromolar range.

7.6 The 2,4-Pyrimidinediamine Compounds Inhibit FcγRI Receptor-Mediated Degranulation

The ability of the 2,4-pyrimidinediamine compounds of the invention to inhibit FcγRI-mediated degranulation was demonstrated with Compounds R921218, R921302, R921303, R940347, R920410, R927050, R940350, R935372, R920323, R926971 and R940352 in assays similar to those described in Section 6.4, with the exception that the cells were not primed with IgE and were activated with rabbit anti-human IgG Fab fragment (Bethyl Laboratories, Catalog No. A80-105).

All of the compounds tested exhibited IC₅₀s in the sub micromolar range. TABLE 1 Low Density CHMC CHMC CHMC CHMC CHMC Basophils Basophils Test anti-IgE Ionomycin anti-IgE anti-IgE Ionomycin anti-IgE Ionomycin Compound Tryptase Tryptase LTC4 Hexos. Hexos. Histamine Histamine R008951 R008952 R008953 R008955 R008956 R008958 R067934 R067963 R070153 R070790 1.665 9999 R070791 R081166 R088814 R088815 R091880 R092788 R908696 3.553 R908697 9999 9999 R909236 0.996 9999 R909237 9999 9999 R909238 0.174 9999 R909239 0.264 9999 R909240 0.262 9999 R909241 0.181 9999 R909242 0.567 9999 R909243 0.263 >10 R909245 0.255 6.242 R909246 0.169 9999 R909247 2.393 9999 R909248 3.582 9999 R909249 9999 9999 R909250 8.025 9999 R909251 0.138 9999 R909252 0.248 9999 R909253 7.955 9999 R909254 0.136 9999 R920664 9999 9999 R920665 1.1 9999 R920666 2.53 9999 R920668 3.2 9999 R920669 0.42 9999 R920670 2.18 9999 R920671 9999 9999 R920672 9999 9999 R920818 9999 9999 R920819 10 9999 R920820 9999 9999 R920846 9999 9999 R920860 1.009 9999 R920861 0.598 >10 R920893 1.239 9999 R920894 0.888 5.566 R920910 0.751 7.922 R920917 1.579 9.729 R921218 0.499 9999 0.55 0.6 9999 0.24 9999 R921219 0.059 9999 0.025 9999 R925734 9.2 >10 R925747 1.021 3.1 R925755 0.898 9999 R925757 2.8 9999 R925758 1.175 9999 R925760 4.85 9999 R925765 6.8 9999 R925766 8.9 9999 R925767 10 R925768 9999 R925769 9999 R925770 9999 R925771 0.5 2.8 0.22 R925772 9999 9999 R925773 0.673 9999 R925774 0.435 9999 R925775 0.225 9999 0.2 R925776 2.1 9999 R925778 0.225 9999 0.18 R925779 0.265 9999 0.19 R925783 2.9 9999 R925784 3.2 9999 R925785 2.5 9999 R925786 1.85 9999 R925787 9 9999 R925788 2.4 9999 R925790 9999 9999 R925791 9999 9999 R925792 6.25 9999 R925794 9999 9999 R925795 9999 9999 R925796 2 9999 R925797 0.85 9999 0.28 R925798 9999 9999 R925799 9999 9999 R925800 9999 9999 R925801 9999 9999 R925802 9999 9999 R925803 9999 9999 R925804 9999 9999 R925805 9999 9999 R925806 9999 9999 R925807 9999 9999 R925808 9999 9999 R925810 9999 9999 R925811 3.3 9999 R925812 5.8 9999 R925813 9999 9999 R925814 9999 9999 R925815 9999 9999 R925816 6 9999 R925819 9999 9999 R925820 9999 9999 R925821 9999 9999 R925822 9999 9999 R925823 9999 9999 R925824 9999 9999 R925837 9999 9999 R925838 9999 9999 R925839 9999 9999 R925840 9999 9999 R925841 9999 9999 R925842 7.3 9999 R925843 9999 9999 R925844 5.1 9999 R925845 2.3 9999 R925846 9999 9999 R925849 8.2 9999 R925851 0.925 9999 R925852 3 9999 R925853 9999 9999 R925854 9999 9999 R925855 4.2 9999 R925856 9.85 9999 R925857 5.95 9999 R925858 8.05 7.3 R925859 9999 9999 R925860 9999 9999 R925861 9999 9999 R925862 0.7 9999 R925863 0.274 9999 R925864 9999 9999 R925865 9999 9999 R926016 9999 9999 R926017 1.43 9999 0.53 9999 R926018 9999 10 R926037 9999 9999 R926038 9999 9999 R926039 9999 9999 R926058 9999 9999 R926064 6.2 R926065 3.5 R926068 >10 R926069 9.1 R926072 >10 R926086 2.5 9999 R926108 0.76 0.787 6.4 0.95 9999 R926109 0.538 5.5 0.73 0.55 >10 0.15 9999 R926110 1.071 9999 1.42 1.2 >10 0.3 9999 R926113 0.413 0.49 0.413 9999 0.27 9999 R926114 3.427 8.1 1.7 10 R926145 4.764 >10 R926146 1.59 0.761 6.7 R926147 1.899 >10 R926206 >10 >10 R926209 >10 9999 R926210 0.926 9999 0.8 700 9999 0.37 >10 R926211 1.299 9.8 2.7 9999 1.55 >10 R926212 0.654 9999 0.45 0.5 >10 R926213 1.639 5.5 1.75 >10 R926218 >10 R926219 1.102 6.7 R926220 >10 R926221 8.5 R926222 >10 R926223 >10 R926224 >10 R926225 >10 R926228 >10 R926229 >10 R926230 >10 R926234 >10 R926237 1.207 6.2 R926240 0.381 1.7 0.145 R926241 7 9999 R926242 4.2 9999 R926243 3.1 9999 R926245 3.1 9.4 R926248 0.9 9999 0.76 R926249 0.5 9999 0.25 R926252 2.8 R926253 0.8 0.675 R926254 1.3 4 R926255 1.4 4.5 R926256 0.275 5.1 0.23 R926257 1.5 7.5 R926258 0.9 9999 0.59 R926259 2.5 6.2 R926319 9999 9999 R926320 9999 9999 R926321 9999 9999 R926325 9999 9999 R926331 9999 9999 R926339 0.66 9999 R926340 3.23 9999 R926341 0.875 9999 R926342 10 9999 R926376 9999 R926386 9999 9999 R926387 0.65 9999 0.7 R926394 9999 9999 R926395 0.875 6.4 0.29 R926396 0.7 2.6 0.16 R926397 9999 9999 R926398 9999 9999 R926399 9999 9999 R926400 9999 9999 R926401 9999 9999 R926402 9999 9999 R926403 9999 9999 R926404 9999 9999 R926405 3.4 9999 R926406 9999 9999 R926408 9.6 9999 R926409 3.15 9999 R926411 0.69 2.5 R926412 0.62 9999 R926461 0.725 9999 R926467 1.175 8.8 R926469 9999 R926474 2.5 9999 R926475 2.15 >10 R926476 0.6 7.7 R926477 0.27 9999 R926478 9999 R926479 9999 R926480 1.9 9999 R926481 1.445 9999 R926482 1.037 >10 R926483 9999 R926484 1.523 9999 R926485 4.012 9999 R926486 0.647 7.403 R926487 0.554 8.867 1.25 R926488 0.331 >10 0.752 R926489 1.414 >10 R926490 1.571 9999 R926491 1.158 >10 R926492 0.645 9999 R926493 0.25 9.181 0.078 R926494 0.313 9999 0.078 R926495 0.121 >10 0.078 0.04 9999 R926496 0.571 >10 R926497 0.138 9999 0.27 9999 R926498 0.209 >10 R926499 0.29 >10 R926500 0.418 >10 R926501 0.298 >10 0.609 9999 R926502 0.483 >10 0.405 9999 R926503 0.452 >10 R926504 0.569 >10 R926505 0.145 9999 R926506 0.343 9999 R926508 0.127 9999 0.065 9999 R926509 1.16 9999 R926510 0.44 >10 R926511 0.786 >10 R926514 9999 9999 R926516 1 9999 R926526 9999 9999 R926527 9999 9999 R926528 8.75 9999 R926535 9999 9999 R926536 9999 9999 R926555 9999 9999 R926559 7.7 9999 R926560 9999 9999 R926562 9999 9999 R926563 9999 9999 R926564 3.75 9999 R926565 0.625 3.3 R926566 2.73 9999 R926567 9.3 9999 R926569 0.61 3.07 R926571 9999 9999 R926572 1.8 6.08 R926574 1.96 2.63 R926576 9999 9999 R926579 9999 9999 R926580 10 9999 R926582 1.3 9999 R926583 9999 9999 R926584 9999 9999 R926585 9999 9999 R926586 2.75 9999 R926587 9999 9999 R926588 7.85 9999 R926589 0.325 10 R926591 2.62 9999 R926593 0.68 8.3 0.495 R926594 9999 9999 R926595 4.85 9999 R926604 2.85 9999 R926605 2.45 9999 R926614 0.228 9999 R926615 0.445 9999 R926616 0.625 3.25 R926617 9.45 9999 R926620 8.35 9999 R926623 9999 9999 R926662 9999 9999 R926663 9999 9999 R926675 0.63 9999 R926676 0.76 9999 R926680 1.71 9999 R926681 0.775 9999 R926682 8.41 9999 R926683 10 9999 R926688 2.25 >10 R926690 0.146 >10 R926696 0.309 >10 R926698 9999 R926699 0.76 9999 R926700 0.157 >10 R926701 2.2 9999 R926702 0.886 9999 R926703 0.525 9999 R926704 0.564 9999 R926705 0.263 9999 0.533 R926706 0.07 2.406 0.078 R926707 0.214 9999 R926708 0.472 9999 R926709 0.858 9999 R926710 1.763 9999 R926711 1.245 9999 R926712 1.084 9999 R926713 0.446 8.741 R926714 0.428 >10 R926715 0.588 >10 R926716 1.06 9999 R926717 7.874 9999 R926718 1.826 9999 R926719 0.1335 4.024 R926720 1.555 9999 R926721 4.441 9999 R926722 5.96 9999 R926723 2.591 9999 R926724 2.059 9999 R926725 0.431 9999 R926726 9999 9999 R926727 0.387 9999 R926728 0.482 >10 R926730 0.251 9999 R926731 9999 9999 R926732 0.444 9999 R926733 1.496 9999 R926734 4.493 9999 R926735 3.712 9999 R926736 0.288 9999 R926737 0.059 9999 R926738 0.342 9999 R926739 0.508 9999 R926740 4.422 9999 R926741 2.908 9999 R926742 0.127 0.043 9999 R926743 9999 R926744 9999 R926745 0.083 9999 R926746 0.989 9999 R926747 0.213 >10 R926748 0.345 >10 R926749 0.472 9999 R926750 0.361 >10 R926751 0.598 9999 R926764 0.252 5.64 R926765 0.324 4.39 R926766 0.756 9999 R926767 0.387 >10 R926768 0.443 >10 R926769 1.067 9999 R926770 0.583 9999 R926771 2.049 9999 R926772 0.337 7.501 R926773 0.548 7.849 R926774 1.934 7.935 R926775 3.47 >10 R926776 0.81 9999 R926777 0.378 9999 R926778 0.414 9999 R926779 9999 9999 R926780 0.152 >10 R926781 0.573 9999 R926782 0.173 >10 R926783 0.304 >10 R926784 0.252 9999 R926785 0.222 >10 R926786 0.504 9999 R926787 5.422 9999 R926788 0.336 6.341 R926789 2.315 9999 R926790 0.462 7.412 R926791 0.233 >10 R926792 3.197 9999 R926793 3.073 9999 R926795 2.041 >10 R926796 0.914 9999 R926797 2.235 9999 R926798 2.347 5.87 R926799 9999 9999 R926800 4.581 9999 R926801 10 9999 R926802 1.251 >10 R926803 1.541 >10 R926804 1.578 7.109 R926805 0.764 9999 R926806 0.374 9999 R926807 0.291 9999 R926808 0.368 9999 R926809 0.78 3.052 R926810 1.221 9999 R926811 3.662 9999 R926812 0.185 >10 R926813 0.152 9999 R926814 1.101 9999 R926815 1.181 9999 R926816 0.084 9999 R935000 9999 9999 R935001 9999 9999 R935002 9999 9999 R935003 9999 9999 R935004 9999 9999 R935005 9999 9999 R935006 10 9.8 R935016 9999 9999 R935019 8.8 9999 R935020 9999 9999 R935021 9999 9999 R935023 9999 9999 R935025 1.04 9999 R935029 2.83 9999 R935075 0.93 9999 R935076 4.15 9999 R935077 9999 9999 R935114 1.725 9999 R935117 9999 R935134 0.909 1.799 R935135 10 9999 R935136 0.952 2.129 R935137 10 9999 R935138 0.096 0.552 R935139 0.846 9999 R935140 0.275 0.959 R935141 0.727 >10 R935142 0.873 >10 R935143 0.573 >10 R935144 0.63 9999 R935145 0.548 >10 R935146 3.802 9999 R935147 1.404 9999 R935148 2.218 9.423 R935149 0.708 >10 R935150 1.926 9.738 R935151 0.479 >10 R935152 0.505 9.316 R935153 0.238 >10 R935154 0.127 >10 R935155 0.401 9999 R935156 0.149 >10 R935157 0.256 4.656 R935158 0.551 >10 R935159 0.232 4.135 R935160 0.202 >10 R935161 0.277 9999 R935162 0.269 >10 R935163 9999 9999 R935164 0.204 9999 R935165 4.988 9999 R935166 0.568 9999 R935167 2.132 >10 R935168 0.488 9.484 R935169 0.999 8.007 R935170 0.673 9999 R935171 0.536 9999 R935172 1.385 6.808 R935173 0.454 >10 R935174 1.384 9999 R935175 0.885 9999 R935176 1.169 9999 R935177 0.889 >10 R935178 0.515 9999 R935179 0.557 9999 R935180 1.22 9999 R935181 1.76 9999 R935182 0.124 2.469 R935183 0.729 9999 R935184 0.605 9999 R935185 0.351 6.642 R935186 0.211 9999 R935187 9.059 >10 R935188 0.239 9999 R935189 0.619 9999 R935190 0.156 9999 R935191 0.151 9999 R935192 0.337 9999 R935193 0.136 9999 R935194 0.11 9999 R935196 0.117 9999 R935197 0.174 >10 R935198 0.126 >10 R935199 0.45 >10 R935202 0.181 9.765 R935203 0.562 >10 R935204 0.554 9999 R935205 2.959 9999 R935206 4.711 9999 R935207 9999 9999 R935208 1.274 9999 R935209 0.526 1.035 R935211 1.238 9999 R935212 1.427 9999 R935213 0.619 10 R935214 0.453 5.499 R935218 4.712 9999 R935219 5.409 9999 R935220 3.789 9999 R940089 9999 9999 R940090 9999 9999 R940095 9999 9999 R940100 9999 9999 R940215 0.845 9999 R940216 0.2675 7.3 R940217 9999 9999 R940222 9999 9999 R940233 0.132 >10 R940235 0.8 >10 R940250 R940251 R940253 1.006 >10 R940254 0.986 9999 R940255 1.033 9999 R940256 1.104 9999 R940257 0.667 9999 R940258 0.473 5.72 R940260 1.126 9999 R940261 9999 9999 R940262 9999 9999 R940263 9999 9999 R940264 10 9999 R940265 0.239 >10 R940266 9999 9999 R940267 3.151 9999 R940269 1.654 9999 R940270 2.144 8.739 R940271 0.401 6.821 R940275 0.862 9999 R940276 0.211 9999 R940277 0.141 9999 R940280 6.999 9999 R940281 0.525 5.529 R940282 0.401 3.015 R940283 0.553 4.982 R940284 0.465 3.744 R940285 3.499 9999 R940286 0.337 7.082 R940287 0.288 7.684 R940288 0.208 9999 R940289 0.272 9999 R940290 0.116 9999 R940291 0.396 9999 R940292 0.683 9999 R940293 9999 9999 R940294 1.366 9999 R940295 0.126 8.812 R940296 0.41 >10 R940297 3.465 10 R945025 9999 9999 R945032 0.37 9999 R945033 9999 9999 R945034 1.85 9999 R945035 9999 9999 R945036 9999 9999 R945037 9999 9999 R945038 9999 9999 R945040 9999 9999 R945041 9999 9999 R945042 9999 9999 R945043 9999 9999 R945045 9999 9999 R945046 0.82 >10 R945047 0.845 9999 R945048 0.76 9999 R945051 0.95 >10 R945052 0.425 2.48 R945053 0.1185 1.48 R945056 10 9999 R945057 10 9999 R945060 0.9375 >10 R945061 10 9999 R945062 0.625 >10 R945063 1.55 >10 R945064 0.53 >10 R945065 1.425 >10 R945066 5.2 nd R945067 9999 nd R945068 9999 nd R945070 0.45 >10 R945071 0.205 >10 R945096 1.75 >10 R945097 10 9999 R945109 1.025 >10 R945110 0.602 9999 R945117 4.077 9999 R945118 0.668 9999 R945124 0.69 7.852 R945125 0.896 >10 R945126 9999 9999 R945127 0.704 8.955 R945128 0.685 8.8 R945129 1.003 >10 R945130 1.874 9999 R945131 0.77 9999 R945132 0.571 8.77 R945133 1.064 >10 R945134 9999 9999 R945135 0.986 8.245 R945137 1.649 >10 R945138 1.058 6.733 R945139 1.016 >10 R945140 0.573 >10 R945142 1.049 >10 R945144 0.244 9999 R945145 9999 >10 R945146 3.756 9999 R945147 3.546 9999 R945148 0.307 9999 R945149 0.391 >10 R945150 0.467 >10 R945151 4.07 9999 R945152 6.94 9999 R945153 0.688 6.561 R945155 1.878 >10 R945156 0.787 9999 R945157 1.477 9999 R945162 9999 9999 R945163 0.922 4.251 R945164 10 9999 R945165 9999 9999 R945166 9999 9999 R945167 0.761 9999 R945168 10 9999 R945169 10 9999 R945170 0.661 >10 R945171 1.327 9999 R945172 1.179 9999 R945173 1.419 9999 R945175 1.648 9999 R950082 9999 9999 R950083 9999 9999 R950090 9999 9999 R921302 0.37 9999 0.19 9999 R950092 9999 9999 R950093 0.64 5.55 R950100 0.71 >10 R950107 0.46 >10 R950108 2.075 >10 R950109 7.95 R950120 3 9999 R950121 4.25 >10 R950122 3.025 9999 R950123 3.25 8.45 R950125 1.375 6.3 R950129 0.665 >10 R950130 4.9 R950131 9999 R950132 9 R950133 2.2 >10 R950134 1.875 9999 R950135 0.85 >10 R950137 2.23 9999 R950138 9.5 R950139 1.375 9999 R950140 2.825 9999 R950141 0.31 >10 R950142 10 R950143 8.23 R950144 10 R950145 9999 R950146 9999 R950147 9999 R950148 2.275 9999 R950149 10 9999 R950150 9999 9999 R950151 9999 R950152 10 R950153 9999 R950154 2.075 9999 R950155 9999 R950156 9999 R950157 9999 R950158 9.98 R950159 0.61 9999 R950160 1 9999 R950162 0.434 >10 R950163 0.874 9999 R950164 1.893 9999 R950165 1.288 9999 R950166 1.889 9999 R950167 9999 9999 R950168 6.496 8.653 R950169 1.273 9.518 R950170 9999 9999 R950171 0.585 >10 R950172 0.983 9999 R950173 2.368 >10 R950174 4.618 9999 R950175 1.688 9999 R950176 1.342 9999 R950177 2.361 8.434 R950178 0.688 >10 R950179 0.955 >10 R950180 0.278 9999 R950181 0.254 9999 R950182 0.627 9999 R950183 4.797 9999 R950184 2.222 9999 R950185 1.03 8.81 R950186 0.558 >10 R950187 0.724 >10 R950188 2.327 9999 R950189 10 9999 R950190 1.573 9999 R950191 0.178 9999 R950192 0.244 9999 R950193 0.61 9999 R950194 2.04 9999 R950195 0.473 9999 R950196 2.2 9999 R950197 0.531 9999 R950198 0.406 >10 R950199 0.408 9999 R950200 0.245 9999 R950201 0.261 9999 R950202 3.218 9999 R950203 9.035 9999 R950204 6.285 9999 R950205 8.997 9999 R950206 3.66 >10 R950207 0.164 9999 R950208 0.267 9999 R950209 0.748 9999 R950210 10 9999 R950211 10 9999 R950212 0.253 9999 R950213 9999 9999 R950214 10 9999 R950215 0.409 9999 R950216 0.327 9999 R950217 0.34 9999 R950218 0.292 9999 R950219 0.439 9999 R950220 0.489 9999 R950221 0.636 9999 R950222 0.865 9999 R950223 0.763 9999 R950224 0.687 9999 R950225 5.283 9999 R950226 1.374 9999 R950227 1.029 9999 R950229 0.98 9999 R950230 7.91 9999 R950231 1.968 9999 R950232 10 9999 R950233 0.98 9999 R950234 10 9999 R950235 4.095 9999 R950236 0.955 9999 R950237 9999 9999 R950238 10 9999 R950239 2.063 9999 R950240 1.766 9999 R950241 3.275 9999 R950251 9999 9999 R950253 0.697 9999 R950254 0.496 9999 R950255 10 9999 R908698 1.67 9999 R908699 0.217 9999 R908700 1.273 9999 R908701 0.099 7.643 R908702 0.104 7.395 R908703 0.63 9999 R908704 0.511 9999 R908705 0.801 9999 R908706 0.445 9999 R908707 1.834 9999 R908709 2.414 R908710 1.838 99 R908711 1.761 R908712 0.075 99 R908734 1.379 R909255 0.244 9999 R909259 0.43 9999 R909260 1.041 9999 R909261 0.93 9999 R909263 0.289 9999 R909264 R909265 99 R909266 99 R909267 0.589 9999 R909268 0.071 9999 R909290 0.226 R909292 1.172 R909308 0.671 9999 R909309 0.083 9999 R920394 R920395 0.092 9999 R920396 R920397 R920398 R920399 R920404 R920405 R920406 R920407 R920408 R920410 0.125 9999 R920411 0.564 9999 R925745 1.766 9999 R926238 9999 R926752 0.338 9999 R926753 0.108 9999 R926754 0.388 9999 R926755 1.693 9999 R926756 1.365 9999 R926757 0.158 9999 R926759 0.688 9999 R926760 2.893 9999 R926761 0.245 9999 R926762 0.386 9999 R926763 0.195 9999 R926794 1.382 9999 R926826 0.613 9999 R926827 1.098 9999 R926828 0.306 9999 R926829 0.688 9999 R926830 0.569 10 R926831 0.133 10 R926832 0.365 9999 R926833 1.129 9999 R926834 0.145 9999 R926835 0.296 9999 R926836 10 9999 R926837 2.994 9999 R926838 0.583 9999 R926839 0.161 9999 R926840 1.1 9999 R926841 0.551 9999 R926842 7.733 9999 R926843 7.371 9999 R926844 1.1 9999 R926845 2.558 7.812 R926846 0.86 6.264 R926847 1.479 6.264 R926848 0.254 10 R926851 0.446 R926855 9999 9999 R926856 0.734 9999 R926857 1.209 9999 R926859 R926860 1.949 99 R926862 0.774 9999 R926863 R926866 R926870 3.294 R926871 2.146 R926874 0.638 9999 R926879 0.397 9999 R926880 R926881 R926883 R926885 R926886 R926887 1.747 R926890 0.361 9999 R926891 0.152 9999 R926892 0.685 9999 R926893 10 9999 R926894 9999 9999 R926895 0.339 9999 R926896 1.622 9999 R926897 1.727 9999 R926898 1.1 9999 R926899 1.1 9999 R926900 9999 9999 R926902 1.37 4.586 R926903 0.243 9999 R926904 0.538 R926905 99 R926906 0.794 R926907 0.764 R926908 0.585 R926909 0.379 R926913 0.548 9999 R926914 1.86 9999 R926915 1.713 9999 R926916 1.958 9999 R926917 1.169 9999 R926918 2.521 9999 R926919 1.413 9999 R926922 0.305 9999 R926923 0.346 9999 R926925 0.307 99 R926926 0.401 9999 R926927 0.348 9999 R926928 0.575 9999 R926929 1.916 9999 R926930 99 9999 R926931 R926932 0.31 9999 R926933 R926934 R926935 4.44 R926936 R926937 R926938 R926939 3.615 R926940 7.754 R926941 4.195 R926942 4.81 R926943 R926944 0.225 99 R926945 0.457 9999 R926946 R926947 0.354 9999 R926948 0.246 9999 R926949 0.089 9999 R926950 99 9999 R926951 0.183 9999 R926953 0.049 9999 R926954 0.284 9999 R926955 0.36 9999 R926956 0.211 9999 R927016 1.408 R927017 2.449 R927018 1.446 R927019 1.179 R927020 1.316 9999 R927023 0.918 9999 R935221 9999 9999 R935222 0.52 9999 R935223 0.469 9999 R935224 4.578 9999 R935225 6.495 9999 R935237 0.24 9999 R935238 1.854 9999 R935239 0.609 9999 R935240 0.606 9999 R935242 2.855 9999 R935248 1.1 9999 R935249 1.1 9999 R935250 1.1 9999 R935251 R935252 R935253 R935255 0.374 9999 R935256 0.324 9999 R935258 1.191 9999 R935259 1.777 9999 R935261 0.391 9999 R935262 0.516 9999 R935263 0.106 10 R935264 0.135 9999 R935266 2.97 R935267 2.463 R935268 1.059 R935269 1.715 R935271 R935276 2.33 R935277 22.883 8.9 R935278 4.753 9999 R935279 0.889 9999 R935280 99 R935281 1.399 9999 R935286 1.158 9999 R935287 0.403 9999 R935288 1.58 9999 R935289 1.688 9999 R935290 0.34 9999 R935291 1.364 9999 R935292 0.483 9999 R935293 0.141 9999 R935294 0.388 9999 R935295 1.943 9999 R935296 99 9999 R935297 7.328 9999 R935298 0.252 99 R935299 0.21 9999 R935300 0.243 9999 R935301 4.05 99 R935302 0.189 9999 R935303 0.244 99 R935304 0.188 9999 R935305 0.495 9999 R935306 0.345 99 R935307 0.139 99 R935308 0.275 9999 R935309 R935310 R935320 2.769 R935321 2.986 R935322 3.416 R935323 9999 R935324 9999 R935336 0.341 9999 R935337 9999 R935338 0.411 9999 R935339 9999 R935340 3.606 R935351 9999 9999 R935352 R935353 9999 9999 R935354 99 9999 R935355 9999 9999 R935356 99 R935357 99 9999 R935358 9999 9999 R935359 1.027 9999 R935360 0.903 9999 R935361 1.438 9999 R935362 0.409 9999 R935363 0.405 9999 R935364 0.563 9999 R935365 0.373 9999 R935366 0.216 9999 R935367 0.053 9999 R940079 9999 R940110 9999 9999 R940299 2.497 9999 R940300 10 9999 R940301 1.975 9999 R940304 9999 9999 R940306 1.1 9999 R940307 0.291 9999 R940308 0.612 4.168 R940309 1.132 9999 R940311 1.95 R940312 2.557 R940314 4.197 R940316 1.858 R940317 0.913 9999 R940318 3.792 R940319 9999 R940321 9999 R940323 0.048 9999 R940337 1.098 R940338 0.073 9999 R921303 0.033 99 R940345 1.712 R940346 0.142 99 R940347 0.063 99 R940348 2.189 R940349 0.044 7.4 R940350 0.092 4 R940351 0.12 2.7 R940352 0.101 9999 R940353 0.091 9999 R940354 0.115 99 R945236 0.562 9999 R945237 0.461 9999 R945242 0.247 9999 R945263 1.642 R921304 0.085 9999 R945299 R950244 9999 R950245 9999 R950246 9999 R950247 9999 R950261 0.611 9999 R950262 0.285 9999 R950263 0.284 3.299 R950264 0.198 9999 R950265 0.312 9999 R950266 0.645 9999 R950267 0.18 9999 R950290 9999 9999 R950291 9999 9999 R950293 3.689 8.155 R950294 2.005 8.005 R950295 2.041 8.795 R950296 0.495 9999 R950344 99 R950345 1.962 99 R950346 0.345 9999 R950347 0.548 R950348 0.066 R950349 0.078 9999 R950356 R950368 0.038 9999 R950371 R950372 1.348 9999 R950373 R950374 0.599 9999 R950376 2.539 R950377 99 R950378 R950379 0.545 9999 R950380 3 9999 R950381 0.11 99 R950382 R950383 0.114 9999 R950385 R950386 0.973 R950388 2.518 R950389 0.612 9999 R950391 999 9999 R950392 0.956 9999 R950393 0.404 9999 R945028 R935241 R940298 R940302 R940303 R940305 R935260 9999 R909258 R940313 9999 R940315 9999 R935275 9999 R940320 9999 R940322 9999 9999 R926910 9999 9999 R926911 9999 9999 R926912 9999 9999 R926853 9999 9999 R926852 9999 9999 R926854 9999 9999 R926920 9999 9999 R926921 99 9999 R926924 99 9999 R926858 R926861 9999 9999 R945298 9999 9999 R940328 9999 R926869 R926873 9999 R926875 9999 R926876 9999 R926877 9999 R940336 9999 R926878 9999 R926882 9999 R926884 9999 R926889 9999 R920400 9999 R920401 9999 R920402 9999 R920403 9999 R940342 99 R920409 9999 R940344 9999 R926888 9999 R926758 R927024 0.326 99 R927025 0.326 R927026 9999 9999 R927027 9999 9999 R927028 0.208 9999 R927029 R927030 0.26 9999 R927031 0.215 99 R927032 0.899 R927035 0.583 9999 R927036 R927037 0.233 9999 R927038 1.05 9999 R927039 1.23 9999 R927040 1.05 9999 R927041 0.788 9999 R927042 R935270 R935368 0.082 9999 R935369 0.255 9999 R935370 R935371 0.794 9999 R935372 0.06 9999 R935373 0.274 9999 R935374 0.356 9999 R935375 10 9999 R935376 R935377 R935378 0.566 9999 R935379 R935380 1.61 99 High Density Basophils BMMC BMMC BMMC BMMC BMMC BMMC Test Dust mite anti-IgE Ionomycin anti-IgE anti-IgE anti-IgE anti-IgE Compound Histamine hexos Hexos. histamine LTC4 TNF-alpha IL-6 R008951 R008952 R008953 R008955 R008956 R008958 R067934 R067963 R070153 R070790 R070791 R081166 R088814 R088815 R091880 R092788 R908696 R908697 R909236 R909237 R909238 <0.22 <0.22 0.521 0.432 <0.22 R909239 R909240 R909241 <0.22 <0.22 1.021 0.253 <0.22 R909242 R909243 R909245 R909246 R909247 R909248 R909249 R909250 R909251 R909252 R909253 R909254 R920664 R920665 R920666 R920668 R920669 R920670 R920671 R920672 R920818 R920819 R920820 R920846 R920860 R920861 R920893 R920894 R920910 R920917 R921218 0.302 0.133 9999 0.203 0.766 0.274 0.100 R921219 0.020 0.069 0.058 0.040 0.039 0.009 R925734 9999 9999 R925747 3.1 R925755 R925757 R925758 R925760 R925765 R925766 R925767 R925768 R925769 R925770 R925771 R925772 R925773 R925774 R925775 R925776 R925778 R925779 R925783 R925784 R925785 R925786 R925787 R925788 R925790 R925791 R925792 R925794 R925795 R925796 R925797 R925798 R925799 R925800 R925801 R925802 R925803 R925804 R925805 R925806 R925807 R925808 R925810 R925811 R925812 R925813 R925814 R925815 R925816 R925819 R925820 R925821 R925822 R925823 R925824 R925837 R925838 R925839 R925840 R925841 R925842 R925843 R925844 R925845 R925846 R925849 R925851 R925852 R925853 R925854 R925855 R925856 R925857 R925858 R925859 R925860 R925861 R925862 R925863 R925864 R925865 R926016 9999 9999 R926017 1.4 9.6 R926018 8.5 9999 R926037 9999 9999 R926038 9999 9999 R926039 9999 9999 R926058 9999 9999 R926064 5.9 7.3 R926065 9999 9999 R926068 7.4 8.2 R926069 4.5 4.4 R926072 9999 9999 R926086 2.8 7.3 R926108 0.9 9999 R926109 0.6 3.2 R926110 1 4.5 R926113 0.65 9999 R926114 9999 9999 R926145 2.4 8.8 R926146 1.35 5 R926147 2 7.1 R926206 6.6 8.6 R926209 10 9.1 R926210 0.6 >10 R926211 3.9 >10 R926212 0.5 5 R926213 R926218 9999 9999 R926219 2.5 3.2 R926220 9999 9999 R926221 9.9 9999 R926222 9999 9999 R926223 9999 9999 R926224 9999 9999 R926225 9999 9999 R926228 9999 R926229 R926230 R926234 9999 R926237 1.9 R926240 R926241 R926242 R926243 R926245 R926248 R926249 R926252 R926253 R926254 R926255 R926256 R926257 R926258 R926259 R926319 R926320 R926321 R926325 R926331 R926339 R926340 R926341 R926342 R926376 R926386 R926387 R926394 R926395 R926396 R926397 R926398 R926399 R926400 R926401 R926402 R926403 R926404 R926405 R926406 R926408 R926409 R926411 R926412 R926461 R926467 R926469 R926474 R926475 R926476 R926477 R926478 R926479 R926480 R926481 R926482 R926483 R926484 R926485 R926486 R926487 R926488 R926489 R926490 R926491 R926492 R926493 R926494 R926495 0.038 0.056 0.089 0.24 0.077 0.028 R926496 R926497 0.205 R926498 <0.22 0.515 0.995 0.614 <0.22 R926499 R926500 R926501 0.645 R926502 0.491 R926503 R926504 R926505 <0.22 <0.22 <0.22 <0.22 <0.22 R926506 R926508 0.054 0.086 0.107 0.162 0.054 0.026 R926509 R926510 R926511 R926514 R926516 R926526 R926527 R926528 R926535 R926536 R926555 R926559 R926560 R926562 R926563 R926564 R926565 R926566 R926567 R926569 R926571 R926572 R926574 R926576 R926579 R926580 R926582 R926583 R926584 R926585 R926586 R926587 R926588 R926589 R926591 R926593 R926594 R926595 R926604 R926605 R926614 R926615 R926616 R926617 R926620 R926623 R926662 R926663 R926675 R926676 R926680 R926681 R926682 R926683 R926688 R926690 R926696 R926698 R926699 R926700 R926701 R926702 R926703 R926704 R926705 R926706 R926707 <0.056 <0.056 0.39 0.088 <0.056 R926708 R926709 R926710 R926711 R926712 R926713 R926714 R926715 R926716 R926717 R926718 R926719 R926720 R926721 R926722 R926723 R926724 R926725 R926726 R926727 R926728 R926730 R926731 R926732 R926733 R926734 R926735 R926736 R926737 0.075 0.073 0.046 0.068 0.017 R926738 R926739 R926740 R926741 0.961 1.025 9999 0.772 0.537 R926742 0.055 0.041 0.055 0.105 0.053 0.022 R926743 R926744 R926745 R926746 R926747 R926748 R926749 R926750 R926751 R926764 R926765 R926766 R926767 R926768 R926769 R926770 R926771 R926772 R926773 R926774 R926775 R926776 R926777 R926778 R926779 R926780 <0.22 <0.22 0.461 <0.22 <0.22 R926781 R926782 <0.22 <0.22 1.461 0.276 <0.22 R926783 R926784 R926785 0.989 0.561 1.411 1.312 0.513 R926786 R926787 R926788 R926789 R926790 R926791 0.064 <0.056 0.896 0.205 <0.056 R926792 R926793 R926795 R926796 R926797 R926798 R926799 R926800 R926801 R926802 R926803 R926804 R926805 R926806 R926807 R926808 R926809 R926810 R926811 R926812 R926813 R926814 R926815 R926816 R935000 R935001 R935002 R935003 R935004 R935005 R935006 R935016 R935019 R935020 R935021 R935023 R935025 R935029 R935075 R935076 R935077 R935114 R935117 R935134 R935135 R935136 R935137 R935138 <0.22 <0.22 0.373 0.409 <0.22 R935139 R935140 R935141 R935142 R935143 R935144 R935145 R935146 R935147 R935148 R935149 R935150 R935151 R935152 R935153 R935154 0.104 0.085 0.547 0.131 0.041 R935155 R935156 <0.22 <0.22 0.433 0.22 <0.22 R935157 R935158 R935159 R935160 <0.22 0.317 0.876 0.484 <0.22 R935161 R935162 R935163 R935164 R935165 R935166 R935167 R935168 R935169 R935170 R935171 R935172 R935173 R935174 R935175 R935176 R935177 R935178 R935179 R935180 R935181 R935182 R935183 R935184 R935185 R935186 R935187 R935188 R935189 R935190 R935191 0.068 0.043 0.213 0.071 0.027 R935192 R935193 0.08 0.048 0.312 0.092 0.037 R935194 0.125 0.054 0.493 0.118 0.034 R935196 R935197 R935198 R935199 R935202 R935203 R935204 R935205 R935206 R935207 R935208 R935209 R935211 R935212 R935213 R935214 R935218 R935219 R935220 R940089 R940090 R940095 R940100 R940215 R940216 R940217 R940222 R940233 R940235 R940250 R940251 R940253 R940254 R940255 R940256 R940257 R940258 R940260 R940261 R940262 R940263 R940264 R940265 0.981 0.306 1.211 1.131 0.486 R940266 R940267 R940269 R940270 R940271 R940275 R940276 0.136 0.073 0.332 0.251 <0.056 R940277 0.279 0.315 0.625 0.262 0.181 R940280 R940281 R940282 R940283 R940284 R940285 R940286 R940287 R940288 R940289 R940290 0.255 0.545 0.59 0.246 0.1 R940291 R940292 R940293 R940294 R940295 R940296 R940297 R945025 R945032 R945033 R945034 R945035 R945036 R945037 R945038 R945040 R945041 R945042 R945043 R945045 R945046 R945047 R945048 R945051 R945052 R945053 R945056 R945057 R945060 R945061 R945062 R945063 R945064 R945065 R945066 R945067 R945068 R945070 R945071 R945096 R945097 R945109 R945110 R945117 R945118 R945124 R945125 R945126 R945127 R945128 R945129 R945130 R945131 R945132 R945133 R945134 R945135 R945137 R945138 R945139 R945140 R945142 R945144 R945145 R945146 R945147 R945148 R945149 R945150 >2 >2 9999 0.709 0.634 R945151 R945152 R945153 R945155 R945156 R945157 R945162 R945163 R945164 R945165 R945166 R945167 R945168 R945169 R945170 R945171 R945172 R945173 R945175 R950082 R950083 R950090 R921302 0.282 R950092 R950093 R950100 R950107 R950108 R950109 R950120 R950121 R950122 R950123 R950125 R950129 R950130 R950131 R950132 R950133 R950134 R950135 R950137 R950138 R950139 R950140 R950141 R950142 R950143 R950144 R950145 R950146 R950147 R950148 R950149 R950150 R950151 R950152 R950153 R950154 R950155 R950156 R950157 R950158 R950159 R950160 R950162 R950163 R950164 R950165 R950166 R950167 R950168 R950169 R950170 R950171 R950172 R950173 R950174 R950175 R950176 R950177 R950178 R950179 R950180 R950181 R950182 R950183 R950184 R950185 R950186 R950187 R950188 R950189 R950190 R950191 <0.22 >2 0.401 <0.22 <0.22 R950192 R950193 R950194 R950195 R950196 R950197 R950198 R950199 R950200 R950201 R950202 R950203 R950204 R950205 R950206 R950207 <0.22 <0.22 0.288 <0.22 <0.22 R950208 R950209 R950210 R950211 R950212 R950213 R950214 R950215 R950216 R950217 R950218 R950219 R950220 R950221 R950222 R950223 R950224 R950225 R950226 R950227 R950229 R950230 R950231 R950232 R950233 R950234 R950235 R950236 R950237 R950238 R950239 R950240 R950241 R950251 R950253 R950254 R950255 R908698 R908699 R908700 R908701 R908702 R908703 R908704 R908705 R908706 R908707 R908709 R908710 R908711 R908712 R908734 R909255 R909259 R909260 R909261 R909263 R909264 R909265 R909266 R909267 R909268 R909290 R909292 R909308 R909309 R920394 R920395 R920396 R920397 R920398 R920399 R920404 R920405 R920406 R920407 R920408 R920410 R920411 R925745 R926238 R926752 R926753 R926754 R926755 R926756 R926757 R926759 R926760 R926761 R926762 R926763 R926794 R926826 R926827 R926828 R926829 R926830 R926831 R926832 R926833 R926834 R926835 R926836 R926837 R926838 R926839 R926840 R926841 R926842 R926843 R926844 R926845 R926846 R926847 R926848 R926851 R926855 R926856 R926857 R926859 R926860 R926862 R926863 R926866 R926870 R926871 R926874 R926879 R926880 R926881 R926883 R926885 R926886 R926887 R926890 R926891 R926892 R926893 R926894 R926895 R926896 R926897 R926898 R926899 R926900 R926902 R926903 R926904 R926905 R926906 R926907 R926908 R926909 R926913 R926914 R926915 R926916 R926917 R926918 R926919 R926922 R926923 R926925 R926926 R926927 R926928 R926929 R926930 R926931 R926932 R926933 R926934 R926935 R926936 R926937 R926938 R926939 R926940 R926941 R926942 R926943 R926944 R926945 R926946 R926947 R926948 R926949 R926950 R926951 R926953 R926954 R926955 R926956 R927016 R927017 R927018 R927019 R927020 R927023 R935221 R935222 R935223 R935224 R935225 R935237 R935238 R935239 R935240 R935242 R935248 R935249 R935250 R935251 R935252 R935253 R935255 R935256 R935258 R935259 R935261 R935262 R935263 R935264 R935266 R935267 R935268 R935269 R935271 R935276 R935277 R935278 R935279 R935280 R935281 R935286 R935287 R935288 R935289 R935290 R935291 R935292 R935293 R935294 R935295 R935296 R935297 R935298 R935299 R935300 R935301 R935302 R935303 R935304 R935305 R935306 R935307 R935308 R935309 R935310 R935320 R935321 R935322 R935323 R935324 R935336 R935337 R935338 R935339 R935340 R935351 R935352 R935353 R935354 R935355 R935356 R935357 R935358 R935359 R935360 R935361 R935362 R935363 R935364 R935365 R935366 R935367 R940079 R940110 R940299 R940300 R940301 R940304 R940306 R940307 R940308 R940309 R940311 R940312 R940314 R940316 R940317 R940318 R940319 R940321 R940323 R940337 R940338 R921303 R940345 R940346 R940347 R940348 R940349 R940350 R940351 R940352 R940353 R940354 R945236 R945237 R945242 R945263 R921304 R945299 R950244 R950245 R950246 R950247 R950261 R950262 R950263 R950264 R950265 R950266 R950267 R950290 R950291 R950293 R950294 R950295 R950296 R950344 R950345 R950346 R950347 R950348 R950349 R950356 R950368 R950371 R950372 R950373 R950374 R950376 R950377 R950378 R950379 R950380 R950381 R950382 R950383 R950385 R950386 R950388 R950389 R950391 R950392 R950393 R945028 R935241 R940298 R940302 R940303 R940305 R935260 R909258 R940313 R940315 R935275 R940320 R940322 R926910 R926911 R926912 R926853 R926852 R926854 R926920 R926921 R926924 R926858 R926861 R945298 R940328 R926869 R926873 R926875 R926876 R926877 R940336 R926878 R926882 R926884 R926889 R920400 R920401 R920402 R920403 R940342 R920409 R940344 R926888 R926758 R927024 R927025 R927026 R927027 R927028 R927029 R927030 R927031 R927032 R927035 R927036 R927037 R927038 R927039 R927040 R927041 R927042 R935270 R935368 R935369 R935370 R935371 R935372 R935373 R935374 R935375 R935376 R935377 R935378 R935379 R935380

TABLE 2 High Density CHMC Toxicity high CHMC CHMC CHMC CHMC CHMC Toxicity Toxicity Toxicity BJAB density high density high density high density high density high density Jurkat Jurkat BJAB Cell hexos tryptase histamine LTC4 TNF-alpha IL-13 Light Scat. Cell Titer Glo Light Scat. Titer Glo R008951 R008952 R008953 R008955 R008956 R008958 R067934 R067963 R070153 R070791 R081166 R088814 R088815 R091880 R092788 9999 9999 R909241 3.736 R921219 0.124 0.121 0.162 0.034 0.190 0.175 >10 >10 R925775 9999 9999 R925778 9999 9999 R925779 >10 9999 R925797 >10 9999 R926108 >10 >10 R926109 0.783 0.906 1.827 0.808 1.504 1.664 >10 9999 R926110 >10 >10 R921218 0.464 0.647 0.463 0.695 1.752 2.0776 >10 >10 R926113 1.448 1.649 1.848 0.468 5.678 3.569 >10 >10 R926146 9999 9999 R926210 >10 9999 R926240 10 9999 R926248 >10 9999 R926249 >10 9999 R926253 9999 9999 R926256 >10 9999 R926258 9999 9999 R926387 >10 9999 R926395 >10 9999 R926396 >10 9999 R926411 8.5 >10 R926486 1.088 1.313 1.928 0.834 0.455 R926488 0.521 0.623 0.792 0.201 2.443 1.012 R926493 0.889 1.093 1.324 0.474 >2 >4.33 R926494 0.640 >2 9999 0.326 9999 R926495 0.100 0.235 0.066 0.241 0.362 0.449 >10 >10 R926496 0.429 0.533 0.809 0.414 0.622 R926497 1.106 1.234 1.333 1.876 9999 R926501 >2 >2 9999 9999 9999 >4.33 >4.33 R926502 >2 >2 >2 1.807 >2 1.513 R926505 4.199 R926508 0.170 0.434 0.105 0.505 0.763 >10 >10 R926510 0.921 1.115 1.667 0.417 0.686 2.77 R926511 1.183 1.474 1.73 1.307 >2 >4.33 >4.33 R926614 >10 >10 >10 6.442 R926696 <1.1 <1.1 <1.1 <1.1 <1.1 1.773 >5.0 R926699 <1.1 <1.1 1.44 <1.1 <1.1 1.294 R926700 <1.1 <1.1 <1.1 <1.1 <1.1 2.053 R926703 1.512 1.947 >2 0.724 >2 R926704 >2 9999 9999 9999 9999 R926705 1.007 1.256 0.641 0.494 9999 R926706 >2 9999 9999 1.491 9999 R926742 0.104 0.217 0.080 0.385 0.667 9 >10 R926745 >10 >10 R926780 >5.0 R926782 >4.33 >4.33 R935075 0.647 1.212 0.443 <0.22 >2 >4.33 >4.33 R935154 >4.33 R935156 4.054 R940216 <1.1 <1.1 1.176 <1.1 3.188 3.006 R940233 0.577 0.642 0.586 0.118 2.247 1.781 >4.33 >4.33 R945032 0.357 0.458 0.439 0.0929 1.082 0.291 R945033 8.151 8.868 >10 5.983 R945071 <1.1 <1.1 <1.1 <1.1 <1.1 <1.1 R945128 1.279 1.749 0.547 0.729 >2 ND R945140 0.994 1.112 1.551 1.714 9999 R945142 >2 >2 9999 >2 9999 R945150 >4.33 >4.33 R921302 0.682 0.795 1.588 0.514 1.173 1.672 R950141 0.567 0.618 0.627 0.201 1.059 0.798 R950207 >4.33

7.7 The 2,4-Pyrimidinediamine Compounds of the Invention Selectively Inhibit the Upstream IgE Receptor Cascade

To confirm that many of the 2,4-pyrimidinediamine compounds of the invention exert their inhibitory activity by blocking or inhibiting the early IgE receptor signal transduction cascade, several of the compounds were tested in cellular assays for ionomycin-induced degranulation, as described below.

7.7.1 CHMC Low Cell Density Ionomycin Activation: Tryptase Assay

Assays for ionomycin-induced mast cell degranulation were carried out as described for the CHMC Low Density IgE Activation assays (Section 6.4.3, supra), with the exception that during the 1 hour incubation, 6× ionomycin solution [5 mM ionomycin (Sigma I-0634) in MeOH (stock) diluted 1:416.7 in MT buffer (2 μM final)] was prepared and cells were stimulated by adding 25 μl of the 6× ionomycin solution to the appropriate plates.

7.7.2 Basophil Ionomycin Activation: Histamine Release Assay

Assays for ionomycin-induced basophil cell degranulation were carried out as described for the Basophil IgE or Dustmite Activation Assay (Section 6.4.6, supra), with the exception that following incubation with compound, cells were stimulated with 20 μl of 2 μM ionomycin.

7.7.3 Results

The results of the ionomycin-induced degranulation assays, reported as IC₅₀ values (in μM) are provided in TABLE 1, supra. Of the active compounds tested (i.e., those that inhibit IgE-induced degranulation), the vast majority do not inhibit ionomycin-induced degranulation, confirming that these active compounds selectively inhibit the early (or upstream) IgE receptor signal transduction cascade.

These results were confirmed for certain compounds by measuring anti-IgE-induced and ionomycin-induced calcium ion flux in CHMC cells. In these Ca²⁺ flux tests, 10 μM R921218 and 10 μM R902420 inhibited anti-IgE-induced Ca²⁺ flux, but had no effect on ionomycin-induced Ca²⁺ flux (See FIG. 4).

7.8 The Inhibitory Effect of the 2,4-Pyrimidinediamine Compounds of the Invention is Immediate

To test the immediacy of their inhibitory effect, certain 2,4-pyrimidinediamines of the invention were added simultaneously with anti-IgE antibody activator in the cellular assays described above. All compounds tested blocked IgE-induced degranulation of CHMC cells to the same extent as observed when the compounds were pre-incubated with CHMC cells for 10 or 30 min. prior to receptor cross-linking.

7.9 Kinetics of Pharmacological Activity In Vitro

Compounds R921218, R921302, R921219, R926240, R940277, R926742, R926495, R909243 and R926782 were tested in washout experiments. In the experiments, CHMC cells were either activated immediately with anti-IgE antibody in the presence of 1.25 μM compound (time zero), or the compound was washed out followed by activation with anti-IgE antibody at 30, 60 or 120 min. The inhibitory activity of these compounds was greatly diminished 30 min. after compound removal, indicating that constant exposure of mast cells to these compounds is required for maximal inhibition of degranulation The other compounds tested yielded similar results.

7.10 Toxicity: T- and B-Cells

The ability of the compounds of the invention to exert their inhibitory activity without being toxic to cells of the immune system was demonstrated in cellular assays with B- and T-cells. The protocols for the assays are provided below.

7.10.1 Jurkat (T-Cell) Toxicity

Dilute Jurkat cells to 2×10⁵ cells/ml in complete RPMI (10% heat-inactivated fetal bovine serum) media and incubate at 37° C., 5% CO₂ for 18 hours. Add 65 ul cells at 7.7×10⁵ cells/ml to a 96-well V-bottom plate (TC-treated, Costar) containing 65 ul 2× compound (final vehicle concentration is 0.5% DMSO, 1.5% MeOH). Mix, incubate plates for 18-24 hr at 37° C., 5% CO₂. Toxicity was assessed by flow cytometric analysis of cellular light scatter

7.10.2 BJAB (B-Cell) Toxicity

The B-cell line BJAB was cultured in log phase in RPMI1640+10% heat-inactivated fetal bovine serum, 1× L-glutamine, 1× penicillin, 1× streptavidin and 1× beta-mercaptoethanol at 37° C., 5% CO₂. First, BJABs were harvested, spun and resuspended in culture medium to a concentration of 7.7×10⁵ cells/mL. 65 uL cells were mixed with 65 uL compound, in duplicate and in the presence of 0.1% DMSO in a V-bottomed 96-well tissue culture plate. Cells were incubated with compound at various dilutions at 37° C., 5% CO₂. Toxicity was assessed by flow cytometric analysis of cellular light scatter.

7.10.3 Toxicity: Cell Titer Glo Assay

Seed 50 μl cells (1×10⁶/ml) into each well containing 50 μl compound. The final vehicle concentration is 0.5% DMSO, 1.5% MeOH. Shake plates for 1 minute to mix cells and compound. Incubate plates at 37° C. (5% CO₂) for 18 hours. Next day, harvest 50 μl cells from each well, add to 50 μl Cell Titer Glo reagent (Invitrogen). Shake plates for 1 minute. Read on luminometer.

7.10.4 Results

The results of the T- and B-cell toxicity assays, reported as IC₅₀ values (in μM), are presented in TABLE 2, supra. With a few exceptions (see TABLE 1), all compounds tested were non-toxic to both B- and T-cells at effective inhibitory concentrations. Assays performed with primary B-cells yielded similar results.

7.11 The 2,4-Pyrimidine Compounds are Tolerated in Animals

The ability of the compounds of the invention to exert their inhibitory activity at doeses below those exhibiting toxicity in animals was demonstrated with compounds R921218, R921219 and R921302.

7.11.1 R921218

R921218 was studied in an extensive program of non-clinical safety studies that concluded this agent to be well tolerated in both rodents and non-rodents. To summarize the outcome of toxicology/non-clinical safety testing with R921218; this agent produced no dose limiting toxicity by the intranasal route of administration in non-rodents (rabbits and primates) or by the oral route of administration in rodents (mice and rats) during 14-day repeat-dose toxicity studies at doses many fold above the anticipated dose expected to produce efficacy in man. There were no adverse findings in a core safety pharmacology battery of cardiovascular, respiratory and/or central nervous system function. There was no evidence for mutagenic or clastogenic potential in genetic toxicology testing nor were there untoward effects after exposure to skin and eyes. A short discussion of key toxicology studies is provided.

A 14-day repeat-dose intranasal toxicity study in Cynomolgus monkeys was performed at doses of 2.1, 4.5 or 6.3 mg/kg/day. In life parameters included: clinical observations, body weights, food consumption, ophthalmology, blood pressure, electrocardiography, hematology, clinical chemistry, urinalysis, immunotoxicological assessment, gross necropsy, organ weights, toxicokinetic assessments and histopathology (including the nasal cavity). There were no adverse findings attributed to R921218 in any study parameter and the NOAEL (no observed adverse effect level) was considered 6.3 mg/kg/day.

A 14-day repeat-dose intranasal toxicity study in New Zealand White rabbits was performed at doses of 1.7, 3.4 or 5.0 mg/kg/day. In life parameters included: clinical observations, body weights, food consumption, ophthalmology, hematology, clinical chemistry, gross necropsy, organ weights, toxicokinetic assessments and histopathology (including the nasal cavity). There were no adverse findings attributed to R921218 in any study parameter and the NOAEL (no observed adverse effect level) was considered 5.0 mg/kg/day.

7.11.2 R921219

In pilot dose finding studies a single dose oral dose of 600 mg/kg was considered a NOEL (no observed effect level) while multiple (7-day) doses of 200 mg/kg/day and above were not tolerated.

In the in vitro Salmonella-Escherichia coli/Mammalian-Microsome Reverse Mutation Assay (Ames test), R921219 was found to test positive in tester strain TA1537, with and without metabolic activation, confirming the results of an earlier study. R921219 was not found to adversely affect any of the other 4 tester strains. R921219 was not found to possess clastogenic potential when studied in an in vitro chromosomal aberration assay.

7.11.3 R921302

Several non-GLP pilot toxicity studies have been conducted in rodents. In the mouse an oral dose of 1000 mg/kg was tolerated for up to 7-days. In a 14-day oral toxicity study in the mouse was conducted with doses of 100, 300 and 1000 mg/kg. A dose of 1000 mg/kg was not tolerated, while a dose of 300 mg/kg promoted evidence for histopathological changes in the vulva. A dose of 100 mg/kg was considered the NOAEL (no observed adverse effect level) in the study. A 28-day oral toxicity study in the mouse was conducted at doses of 100 mg/kg q.d., 100 mg/kg b.i.d., 300 mg/kg q.d. and 300 mg/kg b.i.d. R921302 was not tolerated at 300 mg/kg q.d. or b.i.d. The lower doses (100 mg/kg q.d. or b.i.d.) appeared to be well tolerated (results of clinical and histopathology are not yet known). In the rat oral doses of 50, 150 and 300 mg/kg given for 32 days appeared to be well tolerated (results of clinical and histopathology are not yet known).

In the in vitro Salmonella-Escherichia coli/Mammalian-Microsome Reverse Mutation Assay (Ames test), R921302 was found to test positive in tester strain TA98 with S9 and TA1537, with and without metabolic activation. R921302 was not found to adversely affect any of the other 3 tester strains. R921302 was not clastogenic when assessed in an in vitro chromosomal aberration assay.

7.12 The 2,4-Pyrimidinediamine Compounds are Orally Bioavailable

Over 50 2,4-pyrimidinediamine compounds of the invention were tested for oral bioavailability. For the study, compounds were dissolved in various vehicles (e.g. PEG 400 solution and CMC suspension) for intravenous and oral dosing in the rats. Following administration of the drug, plasma samples were obtained and extracted. The plasma concentrations of the compounds were determined by high performance liquid chromatography/tandem mass spectrometry (LC/MS/MS) methods. Pharmacokinetic analyses were performed based on the plasma concentration data. The pharmacokinetic parameters of interest include Clearance (CL), Volume of distribution at steady-state (Vss), terminal half-life (t_(1/2)), and oral bioavailability (%F).

These pharmacokinetic studies indicate that many of the 2,4-pyrimidinediamine compounds are orally available, with %F up to approximately 50% (in the range of 0-50%). The half-lives ranged from 0.5 to 3 hr. In particular, Compounds R940350, R935372, R935193, R927050 and R935391 exhibited good oral bioavailabilities and half-lives in rats. Thus, these studies confirm that these 2,4-pyrimidinediamine compounds are suitable for oral administration.

7.13 The Compounds Are Effective for the Treatment of Allergies

The in vivo efficacy of compounds R926109, R921218, R921219, R921302, R926495, R926508, R926742, R926745 and R945150 towards allergies was evaluated in the mouse model of passive cutaneous anaphylaxis (PCA). This model provides a direct measure of IgE-induced degranulation of tissue mast cells. In this model, IgE primed animals are exposed to an allergen challenge, and the change in permeability of dermal vasculature that results from histamine release from mast cells is measured by change in the amount of dye leakage into surrounding tissue. Inhibition of mediator release by compounds that modulate mast cell degranulation is easily measured by extracting the dye from the tissue.

7.13.1 Study Protocol and Results

In the PCA assay mice are passively sensitized by intradermal injection with anti-dinitrophenol (DNP) IgE antibodies (Day-1). At predetermined times animals are treated with the test agent (Day 0). The modulatory effect of the agent on cutaneous mast cell degranulation is measured following intravenous injection of DNP conjugated to human serum albumin (HSA-DNP), together with Evans blue dye. The resulting cross-linking of the IgE receptor and subsequent mast cell degranulation-induced increase in vascular permeability is determined by measuring the amount of dye extravasation into the tissue. Dye is extracted from the tissue by formamide, and the absorbance of this extract is read at 620 nm. The inhibitory effect of drug treatment is reported as the percent inhibition compared to vehicle treatment, that is, the percent reduction in A₆₂₀.

Two compounds have been tested as positive controls: the histamine antagonist diphenhydramine and the serotonin antagonist cyproheptadine. Both mediators (histamine and serotonin) are released upon IgE-mediated degranulation from the mouse mast cell. Both reference compounds inhibit the PCA response; cyproheptadine was used routinely in subsequent experiements. Cyproheptadine reproducibly inhibited the PCA response by 61%±4% (8 mg/kg, i.p., 30 minutes pretreatment time, n=23 experiments).

7.13.1.1 Results

A dose-dependent inhibition of the FcεR—mediated vascular leakage was observed with increasing doses of R921218, R926109, R921219 and RR921302. These compounds were administered either in a solution formulation (67%PEG/33% citrate buffer) or an aqueous suspension (1.5% Avicel). These results demonstrate the strong correlation between compound plasma levels, in vivo efficacy, and in vitro potency. The most potent compound, R921219, was active with circulating exposure levels of approximately 10 μg/ml (68% inhibition at a dose level of 100 mg/kg) compared with R921302, a relatively less potent molecule, which reduced plasma extravasation by 42% at a dose level of 100 mg/kg. Further, the length of exposure to circulating compound was reflected in the duration of inhibitory activity. R921302, determined to be the most metabolically stable compound in pharmacokinetics studie, inhibited the vascular permeability for 1-2 hours prior to antigen-induced receptor signaling, where after the efficacy began to decrease. These data are summarized in TABLE 3 and TABLE 4. TABLE 3 Efficacy of R921218, R926109, R921219 and R921302 in the PCA Assay Pretreat- Plasma Com- ment Dose % Inhi- level pound Route Vehicle time (min) (mg/kg) bition (μg/ml) R921218 PO 67% PEG/ 10 50 7 3 33% 100 11 4 citrate buffer 200 50 18 R926109 PO 67% PEG/ 15 50 22 N.D. 33% 100 32 citrate buffer 200 48 R921219 PO 1.5% 15 30 25 0.4 Avicel/water 100 68 4 300 92 11 R921302 PO 1.5% 60 50 35 25 Avicel/water 100 42 38 150 56 64 200 93 105

TABLE 4 Duration of action of R921219 and R921302 in the PCA Assay Plasma Com- Dose Pretreatment % level pound Route Vehicle (mg/kg) time (min) Inhibition (μg/ml) RR921302 PO 1.5% 200 30 89 88 Avicel/ 60 83 53 water 120 82 61 240 37 8 Similar in vivo activity was observed with compounds R926495, R926508, R926742, R926745 and R926150, which were able to inhibit the PCA response after administration by the oral route in a PEG-based formulation (data not shown).

7.14 The Compounds are Effective in the Treatment of Asthma

The efficacy of compounds R921218, R921302, R926495, R926508, R926742 and R921219 in the treatment of asthma was demonstrated in the sheep model of allergic asthma. Sheep develop bronchoconstriction within minutes of exposure to inhaled antigen (Ascaris suum), with maximal airflow obstruction during the early allergic response (EAR). Release of preformed mast cell mediators is likely responsible for this early phase of airflow obstruction. In addition to the EAR, the sheep model allows us to evaluate the effect of our compounds on the late asthmatic reaction (LAR) and non-specific airway hyperresponsiveness (AHR), which occur as a result of topical or local administration of allergen to the airway. In the sheep, AHR develops a few hours following antigen challenge, and can persist for up to 2 weeks. The results described below demonstrate the potential of the tested compounds to inhibit a cascade of events that may be a result of release of cytokines from the mast cell.

7.14.1 Study Protocol

In the sheep model of allergic asthma, sheep are administered aerosols of test article via an endotracheal tube, followed by an aerosol challenge with antigen extracted from the roundworm, Ascaris suum, to which the sheep are naturally allergic. Allergen challenge leads to direct bronchoconstriction (both EAR and LAR) and a persistent non-specific AHR. These three characteristics are similar to those seen in human allergic asthmatics. The activity of the test agent is determined by changes in the lung resistance (R_(L)), which is calculated from measurements of transpulmonary pressure, flow, and respiratory volume. The historical control data obtained from the same sheep following saline treatment compared with an allergen challenge show that a sharp increase of R_(L) occurs during the EAR and persists for approximately 2-3 hours following allergen challenge. The LAR is a less pronounced increase in R_(L), which starts approximately 5-6 hours following allergen challenge and is resolved by 8 hours post-challenge. Twenty-four hours after the challenge, a dose response to carbachol is measured to determine the AHR, which is expressed as the dose of carbachol required to increase R_(L) by 400% over baseline. (This measurement is referred to as the provocative concentration of carbachol that elicits a 400% increase in RL over baseline (PC₄₀₀). The data are compared to historical control data for the same individual when administered a saline control aerosol and challenged with Ascaris suum.

7.14.2 Result

All the compounds tested showed inhibitory effects in the LAR and the AHR, and several of these agents inhibited the EAR as well. The optimal response for each compound in a series of studies to evaluate activity at several pretreatment times and using several different solution and suspension formulations are shown in TABLE 5. The efficacy of R921218 on the EAR appeared to be dependent on the formulation, with the greatest effect seen at 30 mg/sheep administered as a solution aerosol in 10% ethanol. R926495, R926742, R926508 and R921219, administered in four different sheep at 45 mg/sheep in an aqueous suspension 60 minutes prior to allergen challenge, demonstrate that the LAR and AHR is blocked. In addition to these late parameters, the EAR was greatly reduced by treatment with R921219, R926508 or R926495. The efficacy of RR921302 was investigated using a 45%PEG400/55% citrate buffer vehicle. Under these conditions, R921302, administered at 30 mg/sheep 60 minutes prior to challenge, blocked the LAR and AHR, and EAR was unaffected.

These data clearly demonstrate that these compounds are able to block the asthmatic responses in allergic sheep. All compounds inhibited the AHR and LAR significantly when compared to the historical control. The EAR was significantly inhibited by R921219, R926508 and R926495 (54%, 21% and 33% respectively). In contrast, R921218, R921302 and R926742 failed to inhibit the EAR when administered in an aqueous suspension. TABLE 5 Efficacy Of Exemplary Compounds In A Sheep Model Of Allergic Asthma Dose Pretreatment EAR (% LAR (% AHR (% Compound (mg/sheep) time (min) Vehicle inhibition) inhibition) inhibition) R921218 30 15 10% ethanol 66 78 101 R926742 45 60 Aqueous −19 87 94 R926495 45 60 suspension 33 85 41 R926508 45 60 21 90 88 R921219 45 60 56 75 90 RR921302 30 60 45% PEG400/55% −28 86 82 citrate buffer

7.15 The Compounds are Effective in the Treatment of Asthma

The efficacy of compounds R921304 and R921219 in the treatment of asthma was also demonstrated in a mouse model of allergic asthma.

7.15.1 Study Protocol

Mice are sensitized to ovalbumin (chicken protein) in the presence of an adjuvant (Alum) by the intraperitoneal route on day 0 and day 7. One week later, mice are challenged intranasally with ovalbumin on Days 14, 15 and 16 (more stringent model) or on Day 14 (less stringent model). This sensitization and challenge regimen leads to airway hyperresponsiveness and inflammation in the lungs, which are two dominant characteristics of human allergic asthma. In the mouse model, the in vivo airway responses are measured using a whole body plethysmograph which determines the PENH (enhanced Pause, Buxco Electronics). The PENH is a dimensionless value comprised of the peak inspiratory flow (PIF), peak expiratory flow (PEF), time of inspiration, time of expiration and relaxation time, and is considered a validated parameter of airway responsiveness. Responses to allergen challenge (OVA) are compared with animals challenged with saline only. Twenty-four hours after challenge, mice are exposed to increasing doses of methacholine (muscarinic receptor agonist) which results in smooth muscle contraction. The ovalbumin-challenged mice demonstrate a significant airway hyperresponsiveness to methacholine when compared to the saline challenged mice. In addition, a cellular infiltrate in the airway is observed in ovalbumin challenged mice when compared with the saline challenged mice. This cellular infiltrate is mainly characterized by eosinophils, but a smaller influx of neutrophils and mononuclear cells is also present.

The use of this model for the evaluation of small molecule inhibitors of mast cell degranulation has been validated is several ways. First, using mast cell deficient mice (W/W^(v)) it has been shown that the ovalbumin-induced responses are dependent upon the presence of mast cells. In the mast cell deficient mice, ovalbumin sensitization and challenge did not result in airway hyperresponsiveness and eosinophil influx. Second, the mast cell stabilizer, Cromolyn, was able to block the ovalbumin-induced airway hyperresponsiveness and inflammation (data not shown). The use of this model to evaluate compounds for the treatment of asthmatic responses that may be mediated by mechanisms other than mast cell stablization, is further supported by the inhibitory effect of the steroids, dexamethasone and budesonide, on methacoline-induced bronchocontriction.

7.15.2 Results

The efficacy of R921304 was evaluated by intranasal administration on 10 consecutive days, from Day 7 through Day 16, at a dose level of 20 mg/kg, with the last 3 doses administered 30 minutes prior to either saline or ovalbumin challenge. R921304 was able to inhibit the ovalbumin-induced airway hyperresponsiveness to methacholine when compared to the vehicle treated mice.

In a less stringent protocol, in which the mice were challenged with ovalbumin only once on Day 14, R921219 administered subcutaneously at 70 mg/kg in 67%PEG400/33% citrate buffer 30 minutes prior to saline or ovalbumin challenge, demonstrates that R921219 completely blocked the ovalbumin-induced airway hyperresponsiveness and cellular influx.

These results clearly demonstrate that R921219 and R921304 are efficacious in inhibiting the airway responses in a mouse model of allergic asthma.

7.16 2,4-Pyrimidinediamine Compounds Inhibit Phosphorylation of Proteins Downstream of Syk kinase in Activated Mast Cells

The inhibitory effect of the 2,4-pyrimidinediamine compounds on the phosphorylation of proteins downstream of Syk kinase was tested with compounds R921218, R218219 and R921304 in IgE receptor-activiated BMMC cells.

For the assay, BMMC cells were incubated in the presence of varying concentrations of test compound (0.08 μM, 0.4 μM, 2 μM and 10 μM) for 1 hr at 37° C. The cells were then stimulated with anti-IgE antibody as previously described. After 10 min, the cells were lysed and the cellular proteins separated by electrophoresis (SDS PAGE).

Following electrophoresis, the phosphorylation of the proteins indicated in FIGS. 7, 10 and 11A-D were assessed by immunoblot. Antibodies were purchased from Cell Signaling Technology, Beverley, Mass.

Referring to FIGS. 7, 10 and 11A-D, the indicated compounds tested inhibited phosphorylation of proteins downstream of Syk, but not upstream of Syk, in the IgE receptor signaling cascade, confirming both that the compounds inhibit upstream IgE induced degranulation, and that the compounds exhert their inhibitory activity by inhibiting Syk kinase.

7.17 2,4-Pyrimidinediamine Compounds Inhibit Syk Kinase in Biochemical Assays

Several 2,4-pyrimidinediamine compounds were tested for the ability to inhibit Syk kinase catalyzed phosphorylation of a peptide substrate in a biochemical fluorescenced polarization assay with isolated Syk kinase. In this experiment, Compounds were diluted to 1% DMSO in kinase buffer (20 mM HEPES, pH 7.4, 5 mM MgCl₂, 2 mM MnCl₂, 1 mM DTT, 0.1 mg/mL acetylated Bovine Gamma Globulin). Compound in 1% DMSO (0.2% DMSO final) was mixed with ATP/substrate solution at room temperature. Syk kinase (Upstate, Lake Placid N.Y.) was added to a final reaction volume of 20 uL, and the reaction was incubated for 30 minutes at room temperature. Final enzyme reaction conditions were 20 mM HEPES, pH 7.4, 5 mM MgCl₂, 2 mM MnCl₂, 1 mM DTT, 0.1 mg/mL acetylated Bovine Gamma Globulin, 0.125 ng Syk, 4 uM ATP, 2.5 uM peptide substrate (biotin-EQEDEPEGDYEEVLE-CONH2, SynPep Corporation). EDTA (10 mM final)/anti-phosphotyrosine antibody (1× final)/fluorescent phosphopeptide tracer (0.5× final) was added in FP Dilution Buffer to stop the reaction for a total volume of 40 uL according to manufacturer's instructions (PanVera Corporation) The plate was incubated for 30 minutes in the dark at room temperature. Plates were read on a Polarion fluorescence polarization plate reader (Tecan). Data were converted to amount of phosphopeptide present using a calibration curve generated by competition with the phosphopeptide competitor provided in the Tyrosine Kinase Assay Kit, Green (PanVera Corporation).

The results of the assay are shown in TABLE 6, below: TABLE 6 Compound No. IC50 (in μM) R926505 0.0703 R926508 0.1315 R926594 0.7705 R926715 0.534 R926745 0.0925 R926782 0.1165 R926791 0.207 R926813 0.4047 R926816 0.0615 R935138 0.2288 R935190 0.0465 R935191 0.045 R935193 0.075 R935194 0.1687 R935196 0.2655 R940255 0.7705 R940256 2.787 R940269 0.685 R940275 0.7335 R940276 0.1265 R940277 0.2143 R940290 0.187 R945071 0.4295 R945140 0.611 R945142 2.007 R945144 0.383 R921302 0.2678 R908702 0.0378 R908712 0.024 R909268 0.1253 R920410 0.157 R926753 0.108 R926757 0.5103 R926834 0.292 R926839 0.055 R926891 0.1695 R926931 0.2553 R935237 0.0455 R935293 0.0465 R935302 0.0265 R935304 0.042 R935307 0.057 R935309 0.098 R935310 0.2003 R940323 0.062 R940338 0.028 R921303 0.00045 R940347 0.0345 R921304 0.01275 R950368 0.0107 R950373 0.0665

These data demonstrate that all of the compounds tested, except for R945142 and R909236 inhibit Syk kinase phosphorylation with IC₅₀s in the submicromolar range. All compounds tested inhibit Syk kinase phosphorylation with IC₅₀s in the micromolar range.

Although the foregoing invention has been described in some detail to facilitate understanding, it will be apparent that certain changes and modifications may be practiced within the scope of the appended claims. Accordingly, the described embodiments are to be considered as illustrative and not restrictive, and the invention is not to be limited to the details given herein, but may be modified within the scope and equivalents of the appended claims.

All literature and patent references cited throughout the application are incorporated by reference into the application for all purposes. 

1. (canceled)
 2. N2,N4-bis(3-hydroxyphenyl)-5-fluoro-2,4-pyrimidinediamine and salts, hydrates, solvates and/or N-oxides thereof.
 3. A pharmaceutical composition comprising N2,N4-bis(3-hydroxyphenyl)-5-fluoro-2,4-pyrimidinediamine and/or a salt, hydrate, solvate and/or N-oxide thereof, and a pharmaceutically acceptable carrier, diluent and/or excipient.
 4. The composition of claim 3 which comprises a pharmaceutically acceptable salt of N2,N4-bis(3-hydroxyphenyl)-5-fluoro-2,4-pyrimidinediamine and/or a hydrate, solvate and/or N-oxide thereof.
 5. The composition of claim 3 in which the salt is a hydrochloride salt, a hydrogen sulfate salt, a sulfate salt, a phosphate salt, an alkane sulfonate salt, a methane sulfonate salt, an ethane sulfonate salt or a p-tolune sulfonate salt.
 6. A method of inhibiting degranulation of a cell, comprising contacting a cell capable of undergoing degranulation with an amount of N2,N4-bis(3-hydroxyphenyl)-5-fluoro-2,4-pyrimidinediamine and/or a salt, hydrate, solvate and/or N-oxide thereof, effective to inhibit degranulation of the cell.
 7. The method of claim 6 in which the cell is a human mast, basophil cell, neutrophil or eosinophil cell.
 8. A method of treating a disease characterized by, caused by or associated with mast or basophil cell degranulation, comprising administering to an animal suffering from such a disease an amount of N2,N4-bis(3-hydroxyphenyl)-5-fluoro-2,4-pyrimidinediamine and/or a salt, hydrate, solvate and/or N-oxide thereof, effective to treat the disease.
 9. The method of claim 8 in which the animal is a human.
 10. The method of claim 9 in which the disease is selected from allergic diseases, low grade scarring, diseases associated with tissue destruction, diseases associated with tissue inflammation, inflammation, and scarring.
 11. The method of claim 10 in which the allergic disease is selected from conjunctivitis, rhinitis, asthma, atopic dermatitis and food allergies.
 12. The method of claim 10 in which the low grade scarring is selected from scleroderma, increased fibrosis, keloids, post-surgical scars, pulmonary fibrosis, vascular spasms, migraine, reperfusion injury and post myocardial infarction.
 13. The method of claim 10 in which the disease associated with tissue destruction is selected from COPD, cardiobronchitis and post myocardial infarction.
 14. The method of claim 10 in which the disease associated with tissue inflammation is selected from irritable bowel, spastic colon and inflammatory colon disease.
 15. A method of inhibiting a Syk kinase, comprising the step of contacting a Syk kinase or an active fragment thereof with an effective amount of N2,N4-bis(3-hydroxyphenyl)-5-fluoro-2,4-pyrimidinediamine and/or a salt, hydrate, solvate and/or N-oxide thereof.
 16. The method of claim 15 which is practiced in vitro with an isolated or recombinant Syk kinase.
 17. The method of claim 15 in which the Syk kinase is practiced in vitro with a cell or cell population that expresses an endogenous or recombinant Syk kinase.
 18. The method of claim 15 which is practiced in vivo.
 19. A method of inhibiting a Syk kinase in an animal, comprising the step of administering to the animal an amount of N2,N4-bis(3-hydroxyphenyl)-5-fluoro-2,4-pyrimidinediamine and/or a salt, hydrate, solvate and/or N-oxide thereof, effective to inhibit a Syk kinase.
 20. A method of treating or preventing a disease mediated at least in part by Syk kinase activity, comprising the step of administering to an animal in need thereof an amount of N2,N4-bis(3-hydroxyphenyl)-5-fluoro-2,4-pyrimidinediamine and/or a salt, hydrate, solvate and/or N-oxide thereof, effective to inhibit a Syk kinase activity, thereby treating or preventing the disease.
 21. The method of claim 20 in which the animal is a human.
 22. A method of inhibiting an Fc receptor signal transduction cascade, comprising the step of contacting a cell comprising an Fc receptor having a gamma homodimer with an amount of N2,N4-bis(3-hydroxyphenyl)-5-fluoro-2,4-pyrimidinediamine and/or a salt, hydrate, solvate and/or N-oxide thereof, effective to inhibit its signal transduction cascade.
 23. The method of claim 22 in which the Fc receptor is selected from FcαRI, FCγRI, FCγRIII and FcεRI. 